25224512 has 28 divisors (see below), whose sum is σ = 51281076. Its totient is φ = 12303360.

The previous prime is 25224503. The next prime is 25224523. The reversal of 25224512 is 21542252.

It can be written as a sum of positive squares in 2 ways, for example, as 14622976 + 10601536 = 3824^2 + 3256^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2183 + ... + 7430.

It is an arithmetic number, because the mean of its divisors is an integer number (1831467).

Almost surely, 2^25224512 is an apocalyptic number.

It is an amenable number.

25224512 is an abundant number, since it is smaller than the sum of its proper divisors (26056564).

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

25224512 is an equidigital number, since it uses as much as digits as its factorization.

25224512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9666 (or 9656 counting only the distinct ones).

The product of its digits is 1600, while the sum is 23.

The square root of 25224512 is about 5022.4010194328. The cubic root of 25224512 is about 293.2744693638.

Adding to 25224512 its reverse (21542252), we get a palindrome (46766764).

The spelling of 25224512 in words is "twenty-five million, two hundred twenty-four thousand, five hundred twelve".