25097216 has 22 divisors (see below), whose sum is σ = 50171970. Its totient is φ = 12548096.

The previous prime is 25097213. The next prime is 25097221. The reversal of 25097216 is 61279052.

It can be written as a sum of positive squares in only one way, i.e., 24601600 + 495616 = 4960^2 + 704^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25097213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11231 + ... + 13278.

Almost surely, 2^25097216 is an apocalyptic number.

It is an amenable number.

25097216 is a deficient number, since it is larger than the sum of its proper divisors (25074754).

25097216 is an equidigital number, since it uses as much as digits as its factorization.

25097216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24529 (or 24511 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 25097216 is about 5009.7121673805. The cubic root of 25097216 is about 292.7802986734.

The spelling of 25097216 in words is "twenty-five million, ninety-seven thousand, two hundred sixteen".