25542625 has 16 divisors (see below), whose sum is σ = 32050512. Its totient is φ = 20323200.

The previous prime is 25542613. The next prime is 25542641. The reversal of 25542625 is 52624552.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 7573504 + 17969121 = 2752^2 + 4239^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25542625 is a prime.

It is a Duffinian 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, 28687 + ... + 29563.

It is an arithmetic number, because the mean of its divisors is an integer number (2003157).

Almost surely, 2^25542625 is an apocalyptic number.

25542625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25542625 is a deficient number, since it is larger than the sum of its proper divisors (6507887).

25542625 is an equidigital number, since it uses as much as digits as its factorization.

25542625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125 (or 1115 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 25542625 is about 5053.9712108400. The cubic root of 25542625 is about 294.5021767523.

The spelling of 25542625 in words is "twenty-five million, five hundred forty-two thousand, six hundred twenty-five".