25925250961 has 4 divisors (see below), whose sum is σ = 25955292672. Its totient is φ = 25895209252.

The previous prime is 25925250941. The next prime is 25925250979. The reversal of 25925250961 is 16905252952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25925250961 - 2²⁵ = 25891696529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25925250941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15019561 + ... + 15021286.

It is an arithmetic number, because the mean of its divisors is an integer number (6488823168).

Almost surely, 2^25925250961 is an apocalyptic number.

It is an amenable number.

25925250961 is a deficient number, since it is larger than the sum of its proper divisors (30041711).

25925250961 is an equidigital number, since it uses as much as digits as its factorization.

25925250961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30041710.

The product of its (nonzero) digits is 486000, while the sum is 46.

The spelling of 25925250961 in words is "twenty-five billion, nine hundred twenty-five million, two hundred fifty thousand, nine hundred sixty-one".