25315312 has 40 divisors (see below), whose sum is σ = 56661552. Its totient is φ = 10828800.

The previous prime is 25315309. The next prime is 25315319. The reversal of 25315312 is 21351352.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25315319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1239 + ... + 7222.

Almost surely, 2^25315312 is an apocalyptic number.

25315312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25315312 is an abundant number, since it is smaller than the sum of its proper divisors (31346240).

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

25315312 is a wasteful number, since it uses less digits than its factorization.

25315312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8497 (or 8491 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 25315312 is about 5031.4324004204. The cubic root of 25315312 is about 293.6259453841.

Adding to 25315312 its reverse (21351352), we get a palindrome (46666664).

It can be divided in two parts, 253 and 15312, that multiplied together give a triangular number (3873936 = T₂₇₈₃).

The spelling of 25315312 in words is "twenty-five million, three hundred fifteen thousand, three hundred twelve".