25131425 has 12 divisors (see below), whose sum is σ = 33996336. Its totient is φ = 18277200.

The previous prime is 25131419. The next prime is 25131437. The reversal of 25131425 is 52413152.

It is not a de Polignac number, because 25131425 - 2⁴ = 25131409 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25131425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45419 + ... + 45968.

It is an arithmetic number, because the mean of its divisors is an integer number (2833028).

Almost surely, 2^25131425 is an apocalyptic number.

25131425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25131425 is a deficient number, since it is larger than the sum of its proper divisors (8864911).

25131425 is a wasteful number, since it uses less digits than its factorization.

25131425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91408 (or 91403 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 25131425 is about 5013.1252727216. The cubic root of 25131425 is about 292.9132639394.

Adding to 25131425 its reverse (52413152), we get a palindrome (77544577).

The spelling of 25131425 in words is "twenty-five million, one hundred thirty-one thousand, four hundred twenty-five".