25402125 has 32 divisors (see below), whose sum is σ = 48312576. Its totient is φ = 11611200.

The previous prime is 25402099. The next prime is 25402127. The reversal of 25402125 is 52120452.

It is a happy number.

It is not a de Polignac number, because 25402125 - 2⁵ = 25402093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25402127) 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, 2214 + ... + 7463.

It is an arithmetic number, because the mean of its divisors is an integer number (1509768).

Almost surely, 2^25402125 is an apocalyptic number.

25402125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25402125 is a deficient number, since it is larger than the sum of its proper divisors (22910451).

25402125 is an equidigital number, since it uses as much as digits as its factorization.

25402125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9702 (or 9692 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 25402125 is about 5040.0520830642. The cubic root of 25402125 is about 293.9612031734.

Adding to 25402125 its reverse (52120452), we get a palindrome (77522577).

The spelling of 25402125 in words is "twenty-five million, four hundred two thousand, one hundred twenty-five".