25487913 has 16 divisors (see below), whose sum is σ = 39254976. Its totient is φ = 14538240.

The previous prime is 25487899. The next prime is 25487951. The reversal of 25487913 is 31978452.

It is not a de Polignac number, because 25487913 - 2¹⁴ = 25471529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25487953) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 22156 + ... + 23277.

It is an arithmetic number, because the mean of its divisors is an integer number (2453436).

Almost surely, 2^25487913 is an apocalyptic number.

It is an amenable number.

25487913 is a deficient number, since it is larger than the sum of its proper divisors (13767063).

25487913 is a wasteful number, since it uses less digits than its factorization.

25487913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45464.

The product of its digits is 60480, while the sum is 39.

The square root of 25487913 is about 5048.5555359924. Note that the first 4 decimals coincide. The cubic root of 25487913 is about 294.2917530484.

The spelling of 25487913 in words is "twenty-five million, four hundred eighty-seven thousand, nine hundred thirteen".