25025305525 has 12 divisors (see below), whose sum is σ = 33852413664. Its totient is φ = 18200222000.

The previous prime is 25025305499. The next prime is 25025305537. The reversal of 25025305525 is 52550352052.

It is not a de Polignac number, because 25025305525 - 2¹³ = 25025297333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45500281 + ... + 45500830.

It is an arithmetic number, because the mean of its divisors is an integer number (2821034472).

Almost surely, 2^25025305525 is an apocalyptic number.

25025305525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25025305525 is a deficient number, since it is larger than the sum of its proper divisors (8827108139).

25025305525 is a wasteful number, since it uses less digits than its factorization.

25025305525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91001132 (or 91001127 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 34.

Adding to 25025305525 its reverse (52550352052), we get a palindrome (77575657577).

The spelling of 25025305525 in words is "twenty-five billion, twenty-five million, three hundred five thousand, five hundred twenty-five".