25555895 has 4 divisors (see below), whose sum is σ = 30667080. Its totient is φ = 20444712.

The previous prime is 25555883. The next prime is 25555903. The reversal of 25555895 is 59855552.

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 25555895 - 2¹⁰ = 25554871 is a prime.

It is a congruent number.

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, 2555585 + ... + 2555594.

It is an arithmetic number, because the mean of its divisors is an integer number (7666770).

Almost surely, 2^25555895 is an apocalyptic number.

25555895 is a deficient number, since it is larger than the sum of its proper divisors (5111185).

25555895 is an equidigital number, since it uses as much as digits as its factorization.

25555895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111184.

The product of its digits is 450000, while the sum is 44.

The square root of 25555895 is about 5055.2838693787. The cubic root of 25555895 is about 294.5531682134.

The spelling of 25555895 in words is "twenty-five million, five hundred fifty-five thousand, eight hundred ninety-five".