25649675 has 12 divisors (see below), whose sum is σ = 31868496. Its totient is φ = 20479200.

The previous prime is 25649653. The next prime is 25649681. The reversal of 25649675 is 57694652.

It is not a de Polignac number, because 25649675 - 2¹² = 25645579 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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23645 + ... + 24705.

It is an arithmetic number, because the mean of its divisors is an integer number (2655708).

Almost surely, 2^25649675 is an apocalyptic number.

25649675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25649675 is a deficient number, since it is larger than the sum of its proper divisors (6218821).

25649675 is a wasteful number, since it uses less digits than its factorization.

25649675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038 (or 2033 counting only the distinct ones).

The product of its digits is 453600, while the sum is 44.

The square root of 25649675 is about 5064.5508191744. The cubic root of 25649675 is about 294.9130261654.

The spelling of 25649675 in words is "twenty-five million, six hundred forty-nine thousand, six hundred seventy-five".