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25253014240 = 255612587399
BaseRepresentation
bin10111100001001100…
…100110101011100000
32102011221000001002201
4113201030212223200
5403204232423430
615333455422544
71552536036136
oct274114465340
972157001081
1025253014240
11a789739403
124a89224a54
1324c5a92b9c
141317c09756
159cbeee8ca
hex5e1326ae0

25253014240 has 48 divisors (see below), whose sum is σ = 60638306400. Its totient is φ = 9935608320.

The previous prime is 25253014219. The next prime is 25253014249. The reversal of 25253014240 is 4241035252.

It is a junction number, because it is equal to n+sod(n) for n = 25253014199 and 25253014208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25253014249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1283940 + ... + 1303459.

It is an arithmetic number, because the mean of its divisors is an integer number (1263298050).

Almost surely, 225253014240 is an apocalyptic number.

25253014240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25253014240 is an abundant number, since it is smaller than the sum of its proper divisors (35385292160).

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

25253014240 is a wasteful number, since it uses less digits than its factorization.

25253014240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587475 (or 2587467 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 25253014240 its reverse (4241035252), we get a palindrome (29494049492).

The spelling of 25253014240 in words is "twenty-five billion, two hundred fifty-three million, fourteen thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 61 80 122 160 244 305 488 610 976 1220 1952 2440 4880 9760 2587399 5174798 10349596 12936995 20699192 25873990 41398384 51747980 82796768 103495960 157831339 206991920 315662678 413983840 631325356 789156695 1262650712 1578313390 2525301424 3156626780 5050602848 6313253560 12626507120 25253014240