251045204520325 has 12 divisors (see below), whose sum is σ = 311297353224868. Its totient is φ = 200835325152000.

The previous prime is 251045204520307. The next prime is 251045204520377. The reversal of 251045204520325 is 523025402540152.

It can be written as a sum of positive squares in 6 ways, for example, as 27864103593316 + 223181100927009 = 5278646^2 + 14939247^2 .

It is a de Polignac number, because none of the positive numbers 2^k-251045204520325 is a prime.

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, 14818326 + ... + 26863975.

Almost surely, 2^{251045204520325} is an apocalyptic number.

251045204520325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

251045204520325 is a deficient number, since it is larger than the sum of its proper divisors (60252148704543).

251045204520325 is a wasteful number, since it uses less digits than its factorization.

251045204520325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41923224 (or 41923219 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 251045204520325 in words is "two hundred fifty-one trillion, forty-five billion, two hundred four million, five hundred twenty thousand, three hundred twenty-five".