25397225 has 24 divisors (see below), whose sum is σ = 36366720. Its totient is φ = 17233920.

The previous prime is 25397191. The next prime is 25397231. The reversal of 25397225 is 52279352.

It is not a de Polignac number, because 25397225 - 2⁶ = 25397161 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17321 + ... + 18729.

It is an arithmetic number, because the mean of its divisors is an integer number (1515280).

Almost surely, 2^25397225 is an apocalyptic number.

25397225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25397225 is a deficient number, since it is larger than the sum of its proper divisors (10969495).

25397225 is a wasteful number, since it uses less digits than its factorization.

25397225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529 (or 1524 counting only the distinct ones).

The product of its digits is 37800, while the sum is 35.

The square root of 25397225 is about 5039.5659535321. The cubic root of 25397225 is about 293.9423005222.

The spelling of 25397225 in words is "twenty-five million, three hundred ninety-seven thousand, two hundred twenty-five".