25597216 has 24 divisors (see below), whose sum is σ = 51150960. Its totient is φ = 12606528.

The previous prime is 25597213. The next prime is 25597219. The reversal of 25597216 is 61279552.

It is an interprime number because it is at equal distance from previous prime (25597213) and next prime (25597219).

It is not an unprimeable number, because it can be changed into a prime (25597213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3826 + ... + 8113.

It is an arithmetic number, because the mean of its divisors is an integer number (2131290).

Almost surely, 2^25597216 is an apocalyptic number.

It is an amenable number.

25597216 is a deficient number, since it is larger than the sum of its proper divisors (25553744).

25597216 is a wasteful number, since it uses less digits than its factorization.

25597216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12016 (or 12008 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 25597216 is about 5059.3691306328. The cubic root of 25597216 is about 294.7118358126.

The spelling of 25597216 in words is "twenty-five million, five hundred ninety-seven thousand, two hundred sixteen".