25397253 has 32 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 14329008.

The previous prime is 25397231. The next prime is 25397257. The reversal of 25397253 is 35279352.

25397253 is a `hidden beast` number, since 2 + 539 + 72 + 53 = 666.

It is not a de Polignac number, because 25397253 - 2⁹ = 25396741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25397257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14878 + ... + 16496.

It is an arithmetic number, because the mean of its divisors is an integer number (1360800).

Almost surely, 2^25397253 is an apocalyptic number.

It is an amenable number.

25397253 is a deficient number, since it is larger than the sum of its proper divisors (18148347).

25397253 is a wasteful number, since it uses less digits than its factorization.

25397253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718 (or 1712 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 25397253 is about 5039.5687315484. The cubic root of 25397253 is about 293.9424085443.

It can be divided in two parts, 2 and 5397253, that added together give a triangular number (5397255 = T₃₂₈₅).

The spelling of 25397253 in words is "twenty-five million, three hundred ninety-seven thousand, two hundred fifty-three".