25559995 has 4 divisors (see below), whose sum is σ = 30672000. Its totient is φ = 20447992.

The previous prime is 25559983. The next prime is 25560013. The reversal of 25559995 is 59995552.

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 25559995 - 2¹¹ = 25557947 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555995 + ... + 2556004.

It is an arithmetic number, because the mean of its divisors is an integer number (7668000).

Almost surely, 2^25559995 is an apocalyptic number.

25559995 is a deficient number, since it is larger than the sum of its proper divisors (5112005).

25559995 is an equidigital number, since it uses as much as digits as its factorization.

25559995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112004.

The product of its digits is 911250, while the sum is 49.

The square root of 25559995 is about 5055.6893694134. The cubic root of 25559995 is about 294.5689193530.

The spelling of 25559995 in words is "twenty-five million, five hundred fifty-nine thousand, nine hundred ninety-five".