25213616 has 20 divisors (see below), whose sum is σ = 49522872. Its totient is φ = 12433536.

The previous prime is 25213607. The next prime is 25213621. The reversal of 25213616 is 61631252.

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, 9626 + ... + 11961.

Almost surely, 2^25213616 is an apocalyptic number.

It is an amenable number.

25213616 is a deficient number, since it is larger than the sum of its proper divisors (24309256).

25213616 is a wasteful number, since it uses less digits than its factorization.

25213616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21668 (or 21662 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 25213616 is about 5021.3161621232. The cubic root of 25213616 is about 293.2322355921.

Adding to 25213616 its reverse (61631252), we get a palindrome (86844868).

The spelling of 25213616 in words is "twenty-five million, two hundred thirteen thousand, six hundred sixteen".