25658477265 has 16 divisors (see below), whose sum is σ = 42377872896. Its totient is φ = 13243084800.

The previous prime is 25658477261. The next prime is 25658477347. The reversal of 25658477265 is 56277485652.

It is not a de Polignac number, because 25658477265 - 2² = 25658477261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25658477261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27589296 + ... + 27590225.

It is an arithmetic number, because the mean of its divisors is an integer number (2648617056).

Almost surely, 2^25658477265 is an apocalyptic number.

It is an amenable number.

25658477265 is a deficient number, since it is larger than the sum of its proper divisors (16719395631).

25658477265 is a wasteful number, since it uses less digits than its factorization.

25658477265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55179560.

The product of its digits is 28224000, while the sum is 57.

The spelling of 25658477265 in words is "twenty-five billion, six hundred fifty-eight million, four hundred seventy-seven thousand, two hundred sixty-five".