25814431 has 2 divisors, whose sum is σ = 25814432. Its totient is φ = 25814430.

The previous prime is 25814417. The next prime is 25814443. The reversal of 25814431 is 13441852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25814431 - 2¹⁹ = 25290143 is a prime.

It is a super-2 number, since 2×25814431² = 1332769695707522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25814431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25814471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12907215 + 12907216.

It is an arithmetic number, because the mean of its divisors is an integer number (12907216).

Almost surely, 2^25814431 is an apocalyptic number.

25814431 is a deficient number, since it is larger than the sum of its proper divisors (1).

25814431 is an equidigital number, since it uses as much as digits as its factorization.

25814431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 28.

The square root of 25814431 is about 5080.7903912679. The cubic root of 25814431 is about 295.5431189661.

The spelling of 25814431 in words is "twenty-five million, eight hundred fourteen thousand, four hundred thirty-one".