25215940325 has 12 divisors (see below), whose sum is σ = 31442451840. Its totient is φ = 20060051760.

The previous prime is 25215940291. The next prime is 25215940333. The reversal of 25215940325 is 52304951252.

It is not a de Polignac number, because 25215940325 - 2⁸ = 25215940069 is a prime.

It is a super-2 number, since 2×25215940325² (a number of 22 digits) contains 22 as substring.

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, 2812949 + ... + 2821898.

It is an arithmetic number, because the mean of its divisors is an integer number (2620204320).

Almost surely, 2^25215940325 is an apocalyptic number.

25215940325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25215940325 is a deficient number, since it is larger than the sum of its proper divisors (6226511515).

25215940325 is a wasteful number, since it uses less digits than its factorization.

25215940325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635036 (or 5635031 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 25215940325 in words is "twenty-five billion, two hundred fifteen million, nine hundred forty thousand, three hundred twenty-five".