25570667 has 2 divisors, whose sum is σ = 25570668. Its totient is φ = 25570666.

The previous prime is 25570631. The next prime is 25570673. The reversal of 25570667 is 76607552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25570667 - 2⁶ = 25570603 is a prime.

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 25570667.

It is not a weakly prime, because it can be changed into another prime (25570627) 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 as a sum of consecutive naturals, namely, 12785333 + 12785334.

It is an arithmetic number, because the mean of its divisors is an integer number (12785334).

Almost surely, 2^25570667 is an apocalyptic number.

25570667 is a deficient number, since it is larger than the sum of its proper divisors (1).

25570667 is an equidigital number, since it uses as much as digits as its factorization.

25570667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 25570667 is about 5056.7447038584. The cubic root of 25570667 is about 294.6099105203.

The spelling of 25570667 in words is "twenty-five million, five hundred seventy thousand, six hundred sixty-seven".