25213012 has 36 divisors (see below), whose sum is σ = 49033908. Its totient is φ = 11334400.

The previous prime is 25212997. The next prime is 25213031. The reversal of 25213012 is 21031252.

It can be written as a sum of positive squares in 2 ways, for example, as 3254416 + 21958596 = 1804^2 + 4686^2 .

It is a super-2 number, since 2×25213012² = 1271391948224288, which 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, 54462 + ... + 54922.

It is an arithmetic number, because the mean of its divisors is an integer number (1362053).

Almost surely, 2^25213012 is an apocalyptic number.

25213012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25213012 is a deficient number, since it is larger than the sum of its proper divisors (23820896).

25213012 is a wasteful number, since it uses less digits than its factorization.

25213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 25213012 is about 5021.2560181692. The cubic root of 25213012 is about 293.2298940837.

Adding to 25213012 its reverse (21031252), we get a palindrome (46244264).

The spelling of 25213012 in words is "twenty-five million, two hundred thirteen thousand, twelve".