25535879 has 4 divisors (see below), whose sum is σ = 25664400. Its totient is φ = 25407360.

The previous prime is 25535869. The next prime is 25535891. The reversal of 25535879 is 97853552.

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

It is a cyclic number.

It is not a de Polignac number, because 25535879 - 2⁸ = 25535623 is a prime.

It is a super-2 number, since 2×25535879² = 1304162232605282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25535869) 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, 63962 + ... + 64359.

It is an arithmetic number, because the mean of its divisors is an integer number (6416100).

Almost surely, 2^25535879 is an apocalyptic number.

25535879 is a deficient number, since it is larger than the sum of its proper divisors (128521).

25535879 is a wasteful number, since it uses less digits than its factorization.

25535879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128520.

The product of its digits is 378000, while the sum is 44.

The square root of 25535879 is about 5053.3037708018. The cubic root of 25535879 is about 294.4762477204.

The spelling of 25535879 in words is "twenty-five million, five hundred thirty-five thousand, eight hundred seventy-nine".