25239995 has 12 divisors (see below), whose sum is σ = 33292560. Its totient is φ = 18355920.

The previous prime is 25239979. The next prime is 25240013. The reversal of 25239995 is 59993252.

It is a happy number.

It is not a de Polignac number, because 25239995 - 2⁴ = 25239979 is a prime.

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, 20255 + ... + 21464.

It is an arithmetic number, because the mean of its divisors is an integer number (2774380).

Almost surely, 2^25239995 is an apocalyptic number.

25239995 is a deficient number, since it is larger than the sum of its proper divisors (8052565).

25239995 is a wasteful number, since it uses less digits than its factorization.

25239995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41746 (or 41735 counting only the distinct ones).

The product of its digits is 218700, while the sum is 44.

The square root of 25239995 is about 5023.9421772150. The cubic root of 25239995 is about 293.3344618012.

The spelling of 25239995 in words is "twenty-five million, two hundred thirty-nine thousand, nine hundred ninety-five".