25480931 has 6 divisors (see below), whose sum is σ = 29641140. Its totient is φ = 21840756.

The previous prime is 25480927. The next prime is 25480933. The reversal of 25480931 is 13908452.

It is not a de Polignac number, because 25480931 - 2² = 25480927 is a prime.

It is a super-2 number, since 2×25480931² = 1298555689253522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25480933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 259961 + ... + 260058.

It is an arithmetic number, because the mean of its divisors is an integer number (4940190).

Almost surely, 2^25480931 is an apocalyptic number.

25480931 is a deficient number, since it is larger than the sum of its proper divisors (4160209).

25480931 is an equidigital number, since it uses as much as digits as its factorization.

25480931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520033 (or 520026 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 25480931 is about 5047.8640037148. The cubic root of 25480931 is about 294.2648784448.

The spelling of 25480931 in words is "twenty-five million, four hundred eighty thousand, nine hundred thirty-one".