25772891 has 2 divisors, whose sum is σ = 25772892. Its totient is φ = 25772890.

The previous prime is 25772863. The next prime is 25772921. The reversal of 25772891 is 19827752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25772891 - 2⁶ = 25772827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25772801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12886445 + 12886446.

It is an arithmetic number, because the mean of its divisors is an integer number (12886446).

Almost surely, 2^25772891 is an apocalyptic number.

25772891 is a deficient number, since it is larger than the sum of its proper divisors (1).

25772891 is an equidigital number, since it uses as much as digits as its factorization.

25772891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 41.

The square root of 25772891 is about 5076.7007987472. The cubic root of 25772891 is about 295.3845067507.

The spelling of 25772891 in words is "twenty-five million, seven hundred seventy-two thousand, eight hundred ninety-one".