25554855 has 16 divisors (see below), whose sum is σ = 41019264. Its totient is φ = 13585440.

The previous prime is 25554839. The next prime is 25554871. The reversal of 25554855 is 55845552.

It is an interprime number because it is at equal distance from previous prime (25554839) and next prime (25554871).

It is not a de Polignac number, because 25554855 - 2⁴ = 25554839 is a prime.

It is a super-2 number, since 2×25554855² = 1306101228142050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2392 + ... + 7538.

It is an arithmetic number, because the mean of its divisors is an integer number (2563704).

Almost surely, 2^25554855 is an apocalyptic number.

25554855 is a deficient number, since it is larger than the sum of its proper divisors (15464409).

25554855 is a wasteful number, since it uses less digits than its factorization.

25554855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5486.

The product of its digits is 200000, while the sum is 39.

The square root of 25554855 is about 5055.1810056614. The cubic root of 25554855 is about 294.5491725345.

The spelling of 25554855 in words is "twenty-five million, five hundred fifty-four thousand, eight hundred fifty-five".