25912051461 has 12 divisors (see below), whose sum is σ = 37436281740. Its totient is φ = 17271118080.

The previous prime is 25912051411. The next prime is 25912051489. The reversal of 25912051461 is 16415021952.

25912051461 is a `hidden beast` number, since 2 + 591 + 2 + 0 + 5 + 1 + 4 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12977538561 + 12934512900 = 113919^2 + 113730^2 .

It is not a de Polignac number, because 25912051461 - 2⁶ = 25912051397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25912051411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252396 + ... + 339893.

It is an arithmetic number, because the mean of its divisors is an integer number (3119690145).

Almost surely, 2^25912051461 is an apocalyptic number.

It is an amenable number.

25912051461 is a deficient number, since it is larger than the sum of its proper divisors (11524230279).

25912051461 is a wasteful number, since it uses less digits than its factorization.

25912051461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597156 (or 597153 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 25912051461 in words is "twenty-five billion, nine hundred twelve million, fifty-one thousand, four hundred sixty-one".