25477591 has 2 divisors, whose sum is σ = 25477592. Its totient is φ = 25477590.

The previous prime is 25477513. The next prime is 25477601. The reversal of 25477591 is 19577452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25477591 - 2⁹ = 25477079 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25477391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12738795 + 12738796.

It is an arithmetic number, because the mean of its divisors is an integer number (12738796).

Almost surely, 2^25477591 is an apocalyptic number.

25477591 is a deficient number, since it is larger than the sum of its proper divisors (1).

25477591 is an equidigital number, since it uses as much as digits as its factorization.

25477591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 40.

The square root of 25477591 is about 5047.5331598713. The cubic root of 25477591 is about 294.2520206253.

The spelling of 25477591 in words is "twenty-five million, four hundred seventy-seven thousand, five hundred ninety-one".