25880521 has 4 divisors (see below), whose sum is σ = 25891200. Its totient is φ = 25869844.

The previous prime is 25880513. The next prime is 25880537. The reversal of 25880521 is 12508852.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25880521 - 2³ = 25880513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25880581) 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, 240 + ... + 7198.

It is an arithmetic number, because the mean of its divisors is an integer number (6472800).

Almost surely, 2^25880521 is an apocalyptic number.

It is an amenable number.

25880521 is a deficient number, since it is larger than the sum of its proper divisors (10679).

25880521 is an equidigital number, since it uses as much as digits as its factorization.

25880521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10678.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 25880521 is about 5087.2901430919. The cubic root of 25880521 is about 295.7951201231.

The spelling of 25880521 in words is "twenty-five million, eight hundred eighty thousand, five hundred twenty-one".