25332665525 has 12 divisors (see below), whose sum is σ = 31501503492. Its totient is φ = 20208714240.

The previous prime is 25332665521. The next prime is 25332665563. The reversal of 25332665525 is 52556623352.

It can be written as a sum of positive squares in 6 ways, for example, as 4773980836 + 20558684689 = 69094^2 + 143383^2 .

It is not a de Polignac number, because 25332665525 - 2² = 25332665521 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 (25332665521) 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, 1426454 + ... + 1444103.

It is an arithmetic number, because the mean of its divisors is an integer number (2625125291).

Almost surely, 2^25332665525 is an apocalyptic number.

25332665525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25332665525 is a deficient number, since it is larger than the sum of its proper divisors (6168837967).

25332665525 is a wasteful number, since it uses less digits than its factorization.

25332665525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870920 (or 2870915 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 44.

The spelling of 25332665525 in words is "twenty-five billion, three hundred thirty-two million, six hundred sixty-five thousand, five hundred twenty-five".