25280579 has 4 divisors (see below), whose sum is σ = 25322040. Its totient is φ = 25239120.

The previous prime is 25280573. The next prime is 25280587. The reversal of 25280579 is 97508252.

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 25280579 - 2¹² = 25276483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25280573) 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, 19802 + ... + 21039.

It is an arithmetic number, because the mean of its divisors is an integer number (6330510).

Almost surely, 2^25280579 is an apocalyptic number.

25280579 is a deficient number, since it is larger than the sum of its proper divisors (41461).

25280579 is an equidigital number, since it uses as much as digits as its factorization.

25280579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41460.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 25280579 is about 5027.9796141194. The cubic root of 25280579 is about 293.4915974752.

The spelling of 25280579 in words is "twenty-five million, two hundred eighty thousand, five hundred seventy-nine".