25577967 has 4 divisors (see below), whose sum is σ = 34103960. Its totient is φ = 17051976.

The previous prime is 25577957. The next prime is 25577983. The reversal of 25577967 is 76977552.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25577967 - 2²⁰ = 24529391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25577957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4262992 + ... + 4262997.

It is an arithmetic number, because the mean of its divisors is an integer number (8525990).

Almost surely, 2^25577967 is an apocalyptic number.

25577967 is a deficient number, since it is larger than the sum of its proper divisors (8525993).

25577967 is an equidigital number, since it uses as much as digits as its factorization.

25577967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8525992.

The product of its digits is 926100, while the sum is 48.

The square root of 25577967 is about 5057.4664605907. The cubic root of 25577967 is about 294.6379432621.

The spelling of 25577967 in words is "twenty-five million, five hundred seventy-seven thousand, nine hundred sixty-seven".