25572881 has 4 divisors (see below), whose sum is σ = 25881072. Its totient is φ = 25264692.

The previous prime is 25572839. The next prime is 25572887. The reversal of 25572881 is 18827552.

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 a de Polignac number, because none of the positive numbers 2^k-25572881 is a prime.

It is a super-2 number, since 2×25572881² = 1307944485280322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25572887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153971 + ... + 154136.

It is an arithmetic number, because the mean of its divisors is an integer number (6470268).

Almost surely, 2^25572881 is an apocalyptic number.

It is an amenable number.

25572881 is a deficient number, since it is larger than the sum of its proper divisors (308191).

25572881 is an equidigital number, since it uses as much as digits as its factorization.

25572881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308190.

The product of its digits is 44800, while the sum is 38.

The square root of 25572881 is about 5056.9636146605. The cubic root of 25572881 is about 294.6184130689.

The spelling of 25572881 in words is "twenty-five million, five hundred seventy-two thousand, eight hundred eighty-one".