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1025405230 = 25102540523
BaseRepresentation
bin111101000111100…
…111000100101110
32122110110222112111
4331013213010232
54100000431410
6245425554234
734260541423
oct7507470456
92573428474
101025405230
114868a6143
122474a597a
13134593975
149a281d4a
156004db8a
hex3d1e712e

1025405230 has 8 divisors (see below), whose sum is σ = 1845729432. Its totient is φ = 410162088.

The previous prime is 1025405221. The next prime is 1025405233. The reversal of 1025405230 is 325045201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×10254052302 = 2102911771422705800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025405233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51270252 + ... + 51270271.

It is an arithmetic number, because the mean of its divisors is an integer number (230716179).

Almost surely, 21025405230 is an apocalyptic number.

1025405230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1025405230 is a deficient number, since it is larger than the sum of its proper divisors (820324202).

1025405230 is a wasteful number, since it uses less digits than its factorization.

1025405230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102540530.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1025405230 is about 32021.9491911408. The cubic root of 1025405230 is about 1008.3976913744.

The spelling of 1025405230 in words is "one billion, twenty-five million, four hundred five thousand, two hundred thirty".

Divisors: 1 2 5 10 102540523 205081046 512702615 1025405230