25055881 has 4 divisors (see below), whose sum is σ = 25069264. Its totient is φ = 25042500.

The previous prime is 25055873. The next prime is 25055893. The reversal of 25055881 is 18855052.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25055881 - 2³ = 25055873 is a prime.

It is a super-2 number, since 2×25055881² = 1255594345372322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25055801) 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, 3315 + ... + 7816.

It is an arithmetic number, because the mean of its divisors is an integer number (6267316).

Almost surely, 2^25055881 is an apocalyptic number.

It is an amenable number.

25055881 is a deficient number, since it is larger than the sum of its proper divisors (13383).

25055881 is a wasteful number, since it uses less digits than its factorization.

25055881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13382.

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 25055881 is about 5005.5849807989. The cubic root of 25055881 is about 292.6194744111.

The spelling of 25055881 in words is "twenty-five million, fifty-five thousand, eight hundred eighty-one".