25540579 has 16 divisors (see below), whose sum is σ = 28771200. Its totient is φ = 22529664.

The previous prime is 25540549. The next prime is 25540591. The reversal of 25540579 is 97504552.

It is a cyclic number.

It is not a de Polignac number, because 25540579 - 2⁵ = 25540547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25540519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34192 + ... + 34930.

It is an arithmetic number, because the mean of its divisors is an integer number (1798200).

Almost surely, 2^25540579 is an apocalyptic number.

25540579 is a deficient number, since it is larger than the sum of its proper divisors (3230621).

25540579 is a wasteful number, since it uses less digits than its factorization.

25540579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 25540579 is about 5053.7687917039. The cubic root of 25540579 is about 294.4943131969.

The spelling of 25540579 in words is "twenty-five million, five hundred forty thousand, five hundred seventy-nine".