25970431 has 2 divisors, whose sum is σ = 25970432. Its totient is φ = 25970430.

The previous prime is 25970429. The next prime is 25970459. The reversal of 25970431 is 13407952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25970431 - 2¹ = 25970429 is a prime.

It is a super-2 number, since 2×25970431² = 1348926572651522, which contains 22 as substring.

Together with 25970429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 25970393 and 25970402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25970731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12985215 + 12985216.

It is an arithmetic number, because the mean of its divisors is an integer number (12985216).

Almost surely, 2^25970431 is an apocalyptic number.

25970431 is a deficient number, since it is larger than the sum of its proper divisors (1).

25970431 is an equidigital number, since it uses as much as digits as its factorization.

25970431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 25970431 is about 5096.1192097517. The cubic root of 25970431 is about 296.1372590526.

The spelling of 25970431 in words is "twenty-five million, nine hundred seventy thousand, four hundred thirty-one".