25669625 has 8 divisors (see below), whose sum is σ = 32035848. Its totient is φ = 20535600.

The previous prime is 25669619. The next prime is 25669673. The reversal of 25669625 is 52696652.

It can be written as a sum of positive squares in 4 ways, for example, as 559504 + 25110121 = 748^2 + 5011^2 .

It is not a de Polignac number, because 25669625 - 2²⁴ = 8892409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102554 + ... + 102803.

It is an arithmetic number, because the mean of its divisors is an integer number (4004481).

Almost surely, 2^25669625 is an apocalyptic number.

25669625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25669625 is a deficient number, since it is larger than the sum of its proper divisors (6366223).

25669625 is an equidigital number, since it uses as much as digits as its factorization.

25669625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205372 (or 205362 counting only the distinct ones).

The product of its digits is 194400, while the sum is 41.

The square root of 25669625 is about 5066.5200088424. The cubic root of 25669625 is about 294.9894662522.

The spelling of 25669625 in words is "twenty-five million, six hundred sixty-nine thousand, six hundred twenty-five".