25531400625 has 40 divisors (see below), whose sum is σ = 44005663680. Its totient is φ = 13147176000.

The previous prime is 25531400593. The next prime is 25531400633. The reversal of 25531400625 is 52600413552.

It is not a de Polignac number, because 25531400625 - 2⁵ = 25531400593 is a prime.

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 39 ways as a sum of consecutive naturals, for example, 180397 + ... + 289146.

It is an arithmetic number, because the mean of its divisors is an integer number (1100141592).

Almost surely, 2^25531400625 is an apocalyptic number.

25531400625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25531400625 is a deficient number, since it is larger than the sum of its proper divisors (18474263055).

25531400625 is an equidigital number, since it uses as much as digits as its factorization.

25531400625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469595 (or 469580 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 25531400625 in words is "twenty-five billion, five hundred thirty-one million, four hundred thousand, six hundred twenty-five".