25438927 has 2 divisors, whose sum is σ = 25438928. Its totient is φ = 25438926.

The previous prime is 25438909. The next prime is 25438937. The reversal of 25438927 is 72983452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25438927 - 2⁷ = 25438799 is a prime.

It is a super-2 number, since 2×25438927² = 1294278013822658, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 25438927.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25438937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12719463 + 12719464.

It is an arithmetic number, because the mean of its divisors is an integer number (12719464).

Almost surely, 2^25438927 is an apocalyptic number.

25438927 is a deficient number, since it is larger than the sum of its proper divisors (1).

25438927 is an equidigital number, since it uses as much as digits as its factorization.

25438927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 25438927 is about 5043.7017160018. The cubic root of 25438927 is about 294.1030960260.

The spelling of 25438927 in words is "twenty-five million, four hundred thirty-eight thousand, nine hundred twenty-seven".