25213604 has 24 divisors (see below), whose sum is σ = 47666808. Its totient is φ = 11600640.

The previous prime is 25213597. The next prime is 25213607. The reversal of 25213604 is 40631252.

It can be written as a sum of positive squares in 4 ways, for example, as 5428900 + 19784704 = 2330^2 + 4448^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25213604.

It is not an unprimeable number, because it can be changed into a prime (25213607) 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, 23234 + ... + 24294.

It is an arithmetic number, because the mean of its divisors is an integer number (1986117).

Almost surely, 2^25213604 is an apocalyptic number.

It is an amenable number.

25213604 is a deficient number, since it is larger than the sum of its proper divisors (22453204).

25213604 is a wasteful number, since it uses less digits than its factorization.

25213604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 25213604 is about 5021.3149672173. The cubic root of 25213604 is about 293.2321890724.

Adding to 25213604 its reverse (40631252), we get a palindrome (65844856).

The spelling of 25213604 in words is "twenty-five million, two hundred thirteen thousand, six hundred four".