25085772400 has 60 divisors (see below), whose sum is σ = 64904625352. Its totient is φ = 9262437120.

The previous prime is 25085772389. The next prime is 25085772427. The reversal of 25085772400 is 427758052.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 2406894 + ... + 2417293.

Almost surely, 2^25085772400 is an apocalyptic number.

25085772400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25085772400 is an abundant number, since it is smaller than the sum of its proper divisors (39818852952).

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

25085772400 is a wasteful number, since it uses less digits than its factorization.

25085772400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4824218 (or 4824207 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The spelling of 25085772400 in words is "twenty-five billion, eighty-five million, seven hundred seventy-two thousand, four hundred".