25320579 has 4 divisors (see below), whose sum is σ = 33760776. Its totient is φ = 16880384.

The previous prime is 25320577. The next prime is 25320601. The reversal of 25320579 is 97502352.

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 25320579 - 2¹ = 25320577 is a prime.

It is a super-2 number, since 2×25320579² = 1282263441790482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25320571) 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, 4220094 + ... + 4220099.

It is an arithmetic number, because the mean of its divisors is an integer number (8440194).

Almost surely, 2^25320579 is an apocalyptic number.

25320579 is a deficient number, since it is larger than the sum of its proper divisors (8440197).

25320579 is an equidigital number, since it uses as much as digits as its factorization.

25320579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440196.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 25320579 is about 5031.9557827946. The cubic root of 25320579 is about 293.6463075087.

The spelling of 25320579 in words is "twenty-five million, three hundred twenty thousand, five hundred seventy-nine".