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245204025440 = 25511139320469
BaseRepresentation
bin1110010001011101001…
…1001000000001100000
3212102220200122002211212
43210113103020001200
513004134212303230
6304351205125252
723500245553433
oct3442723100140
9772820562755
10245204025440
1194a99309610
123b6323b9828
131a17959691a
14bc2189d81a
1565a1c64895
hex39174c8060

245204025440 has 48 divisors (see below), whose sum is σ = 631957651920. Its totient is φ = 89165099520.

The previous prime is 245204025439. The next prime is 245204025481. The reversal of 245204025440 is 44520402542.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 245204025397 and 245204025406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69658475 + ... + 69661994.

It is an arithmetic number, because the mean of its divisors is an integer number (13165784415).

Almost surely, 2245204025440 is an apocalyptic number.

245204025440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245204025440 is an abundant number, since it is smaller than the sum of its proper divisors (386753626480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245204025440 is a wasteful number, since it uses less digits than its factorization.

245204025440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139320495 (or 139320487 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 32.

Adding to 245204025440 its reverse (44520402542), we get a palindrome (289724427982).

The spelling of 245204025440 in words is "two hundred forty-five billion, two hundred four million, twenty-five thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 80 88 110 160 176 220 352 440 880 1760 139320469 278640938 557281876 696602345 1114563752 1393204690 1532525159 2229127504 2786409380 3065050318 4458255008 5572818760 6130100636 7662625795 11145637520 12260201272 15325251590 22291275040 24520402544 30650503180 49040805088 61301006360 122602012720 245204025440