25480431 has 12 divisors (see below), whose sum is σ = 37310208. Its totient is φ = 16753824.

The previous prime is 25480421. The next prime is 25480459. The reversal of 25480431 is 13408452.

It is not a de Polignac number, because 25480431 - 2⁷ = 25480303 is a prime.

It is a super-2 number, since 2×25480431² = 1298504727891522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25480395 and 25480404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25480421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18735 + ... + 20048.

It is an arithmetic number, because the mean of its divisors is an integer number (3109184).

Almost surely, 2^25480431 is an apocalyptic number.

25480431 is a deficient number, since it is larger than the sum of its proper divisors (11829777).

25480431 is a wasteful number, since it uses less digits than its factorization.

25480431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38862 (or 38859 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 25480431 is about 5047.8144775734. The cubic root of 25480431 is about 294.2629536931.

Adding to 25480431 its reverse (13408452), we get a palindrome (38888883).

The spelling of 25480431 in words is "twenty-five million, four hundred eighty thousand, four hundred thirty-one".