25353799920 has 60 divisors (see below), whose sum is σ = 85146513816. Its totient is φ = 6761013120.

The previous prime is 25353799873. The next prime is 25353799931. The reversal of 25353799920 is 2999735352.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 17606086 + ... + 17607525.

Almost surely, 2^25353799920 is an apocalyptic number.

25353799920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25353799920 is an abundant number, since it is smaller than the sum of its proper divisors (59792713896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25353799920 is a wasteful number, since it uses less digits than its factorization.

25353799920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35213630 (or 35213621 counting only the distinct ones).

The product of its (nonzero) digits is 4592700, while the sum is 54.

The spelling of 25353799920 in words is "twenty-five billion, three hundred fifty-three million, seven hundred ninety-nine thousand, nine hundred twenty".