25868768045 has 16 divisors (see below), whose sum is σ = 31212045360. Its totient is φ = 20582252544.

The previous prime is 25868768017. The next prime is 25868768069. The reversal of 25868768045 is 54086786852.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2865889156 + 23002878889 = 53534^2 + 151667^2 .

It is a cyclic number.

It is not a de Polignac number, because 25868768045 - 2²⁶ = 25801659181 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 823691 + ... + 854519.

It is an arithmetic number, because the mean of its divisors is an integer number (1950752835).

Almost surely, 2^25868768045 is an apocalyptic number.

It is an amenable number.

25868768045 is a deficient number, since it is larger than the sum of its proper divisors (5343277315).

25868768045 is a wasteful number, since it uses less digits than its factorization.

25868768045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31744.

The product of its (nonzero) digits is 25804800, while the sum is 59.

The spelling of 25868768045 in words is "twenty-five billion, eight hundred sixty-eight million, seven hundred sixty-eight thousand, forty-five".