25512125 has 16 divisors (see below), whose sum is σ = 32235840. Its totient is φ = 20155600.

The previous prime is 25512107. The next prime is 25512139. The reversal of 25512125 is 52121552.

It is a de Polignac number, because none of the positive numbers 2^k-25512125 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25512125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9146 + ... + 11604.

It is an arithmetic number, because the mean of its divisors is an integer number (2014740).

Almost surely, 2^25512125 is an apocalyptic number.

25512125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25512125 is a deficient number, since it is larger than the sum of its proper divisors (6723715).

25512125 is an equidigital number, since it uses as much as digits as its factorization.

25512125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557 (or 2547 counting only the distinct ones).

The product of its digits is 1000, while the sum is 23.

The square root of 25512125 is about 5050.9528803979. The cubic root of 25512125 is about 294.3849101052.

Adding to 25512125 its reverse (52121552), we get a palindrome (77633677).

The spelling of 25512125 in words is "twenty-five million, five hundred twelve thousand, one hundred twenty-five".