25500528025 has 24 divisors (see below), whose sum is σ = 36194252864. Its totient is φ = 17458804800.

The previous prime is 25500527999. The next prime is 25500528029. The reversal of 25500528025 is 52082500552.

It is a happy number.

It is not a de Polignac number, because 25500528025 - 2¹⁵ = 25500495257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25500528029) 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 23 ways as a sum of consecutive naturals, for example, 786 + ... + 225835.

Almost surely, 2^25500528025 is an apocalyptic number.

25500528025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25500528025 is a deficient number, since it is larger than the sum of its proper divisors (10693724839).

25500528025 is a wasteful number, since it uses less digits than its factorization.

25500528025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227281 (or 227276 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 25500528025 in words is "twenty-five billion, five hundred million, five hundred twenty-eight thousand, twenty-five".