25012502525 has 12 divisors (see below), whose sum is σ = 31523955924. Its totient is φ = 19681968000.

The previous prime is 25012502513. The next prime is 25012502527. The reversal of 25012502525 is 52520521052.

It can be written as a sum of positive squares in 6 ways, for example, as 12603879289 + 12408623236 = 112267^2 + 111394^2 .

It is not a de Polignac number, because 25012502525 - 2¹⁶ = 25012436989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25012502527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8199296 + ... + 8202345.

It is an arithmetic number, because the mean of its divisors is an integer number (2626996327).

Almost surely, 2^25012502525 is an apocalyptic number.

25012502525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25012502525 is a deficient number, since it is larger than the sum of its proper divisors (6511453399).

25012502525 is a wasteful number, since it uses less digits than its factorization.

25012502525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16401712 (or 16401707 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The spelling of 25012502525 in words is "twenty-five billion, twelve million, five hundred two thousand, five hundred twenty-five".