25125960625 has 10 divisors (see below), whose sum is σ = 31397401178. Its totient is φ = 20100768000.

The previous prime is 25125960623. The next prime is 25125960647. The reversal of 25125960625 is 52606952152.

It can be written as a sum of positive squares in 5 ways, for example, as 4403782321 + 20722178304 = 66361^2 + 143952^2 .

It is not a de Polignac number, because 25125960625 - 2¹ = 25125960623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25125960623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20100144 + ... + 20101393.

Almost surely, 2^25125960625 is an apocalyptic number.

25125960625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25125960625 is a deficient number, since it is larger than the sum of its proper divisors (6271440553).

25125960625 is an frugal number, since it uses more digits than its factorization.

25125960625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40201557 (or 40201542 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 25125960625 in words is "twenty-five billion, one hundred twenty-five million, nine hundred sixty thousand, six hundred twenty-five".