256510051012525 has 12 divisors (see below), whose sum is σ = 319737764116224. Its totient is φ = 204133653158000.

The previous prime is 256510051012519. The next prime is 256510051012549. The reversal of 256510051012525 is 525210150015652.

It is a happy number.

It is not a de Polignac number, because 256510051012525 - 2¹⁷ = 256510050881453 is a prime.

It is a super-4 number, since 4×256510051012525⁴ (a number of 59 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26859686431 + ... + 26859695980.

It is an arithmetic number, because the mean of its divisors is an integer number (26644813676352).

Almost surely, 2^{256510051012525} is an apocalyptic number.

256510051012525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256510051012525 is a deficient number, since it is larger than the sum of its proper divisors (63227713103699).

256510051012525 is a wasteful number, since it uses less digits than its factorization.

256510051012525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53719382612 (or 53719382607 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 40.

The spelling of 256510051012525 in words is "two hundred fifty-six trillion, five hundred ten billion, fifty-one million, twelve thousand, five hundred twenty-five".