25213125 has 80 divisors (see below), whose sum is σ = 51283584. Its totient is φ = 10752000.

The previous prime is 25213109. The next prime is 25213127. The reversal of 25213125 is 52131252.

It is not a de Polignac number, because 25213125 - 2⁴ = 25213109 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 (25213127) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 223069 + ... + 223181.

Almost surely, 2^25213125 is an apocalyptic number.

25213125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25213125 is an abundant number, since it is smaller than the sum of its proper divisors (26070459).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25213125 is a wasteful number, since it uses less digits than its factorization.

25213125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 145 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 25213125 is about 5021.2672703213. The cubic root of 25213125 is about 293.2303321502.

Adding to 25213125 its reverse (52131252), we get a palindrome (77344377).

The spelling of 25213125 in words is "twenty-five million, two hundred thirteen thousand, one hundred twenty-five".