25897408922 has 32 divisors (see below), whose sum is σ = 48500809344. Its totient is φ = 10075464000.

The previous prime is 25897408919. The next prime is 25897408939. The reversal of 25897408922 is 22980479852.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11993 + ... + 227900.

It is an arithmetic number, because the mean of its divisors is an integer number (1515650292).

Almost surely, 2^25897408922 is an apocalyptic number.

25897408922 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25897408922 is a deficient number, since it is larger than the sum of its proper divisors (22603400422).

25897408922 is a wasteful number, since it uses less digits than its factorization.

25897408922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240614.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 25897408922 in words is "twenty-five billion, eight hundred ninety-seven million, four hundred eight thousand, nine hundred twenty-two".