25555051 has 4 divisors (see below), whose sum is σ = 25582032. Its totient is φ = 25528072.

The previous prime is 25555039. The next prime is 25555069. The reversal of 25555051 is 15055552.

It is a happy number.

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 25555051 - 2¹⁹ = 25030763 is a prime.

It is a super-2 number, since 2×25555051² = 1306121263225202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25555031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12016 + ... + 13981.

It is an arithmetic number, because the mean of its divisors is an integer number (6395508).

Almost surely, 2^25555051 is an apocalyptic number.

25555051 is a deficient number, since it is larger than the sum of its proper divisors (26981).

25555051 is an equidigital number, since it uses as much as digits as its factorization.

25555051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26980.

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 25555051 is about 5055.2003916759. The cubic root of 25555051 is about 294.5499255746.

The spelling of 25555051 in words is "twenty-five million, five hundred fifty-five thousand, fifty-one".