25312635825 has 24 divisors (see below), whose sum is σ = 42060552000. Its totient is φ = 13432224960.

The previous prime is 25312635779. The next prime is 25312635847. The reversal of 25312635825 is 52853621352.

It is not a de Polignac number, because 25312635825 - 2¹⁰ = 25312634801 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 833070 + ... + 862919.

It is an arithmetic number, because the mean of its divisors is an integer number (1752523000).

Almost surely, 2^25312635825 is an apocalyptic number.

25312635825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25312635825 is a deficient number, since it is larger than the sum of its proper divisors (16747916175).

25312635825 is a wasteful number, since it uses less digits than its factorization.

25312635825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696201 (or 1696196 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The spelling of 25312635825 in words is "twenty-five billion, three hundred twelve million, six hundred thirty-five thousand, eight hundred twenty-five".