25215288 has 32 divisors (see below), whose sum is σ = 72044160. Its totient is φ = 7204320.

The previous prime is 25215283. The next prime is 25215293. The reversal of 25215288 is 88251252.

It is an interprime number because it is at equal distance from previous prime (25215283) and next prime (25215293).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25215283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74878 + ... + 75213.

It is an arithmetic number, because the mean of its divisors is an integer number (2251380).

Almost surely, 2^25215288 is an apocalyptic number.

25215288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25215288 is an abundant number, since it is smaller than the sum of its proper divisors (46828872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25215288 is a wasteful number, since it uses less digits than its factorization.

25215288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150107 (or 150103 counting only the distinct ones).

The product of its digits is 12800, while the sum is 33.

The square root of 25215288 is about 5021.4826495767. The cubic root of 25215288 is about 293.2387171887.

The spelling of 25215288 in words is "twenty-five million, two hundred fifteen thousand, two hundred eighty-eight".