25651012 has 18 divisors (see below), whose sum is σ = 46390974. Its totient is φ = 12409920.

The previous prime is 25651009. The next prime is 25651013. The reversal of 25651012 is 21015652.

It can be written as a sum of positive squares in only one way, i.e., 15256836 + 10394176 = 3906^2 + 3224^2 .

It is not an unprimeable number, because it can be changed into a prime (25651013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 508 + ... + 7180.

Almost surely, 2^25651012 is an apocalyptic number.

It is an amenable number.

25651012 is a deficient number, since it is larger than the sum of its proper divisors (20739962).

25651012 is a wasteful number, since it uses less digits than its factorization.

25651012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6739 (or 6706 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 25651012 is about 5064.6828133655. The cubic root of 25651012 is about 294.9181502311.

Adding to 25651012 its reverse (21015652), we get a palindrome (46666664).

The spelling of 25651012 in words is "twenty-five million, six hundred fifty-one thousand, twelve".