25459879 has 4 divisors (see below), whose sum is σ = 25500240. Its totient is φ = 25419520.

The previous prime is 25459877. The next prime is 25459937. The reversal of 25459879 is 97895452.

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 25459879 - 2¹ = 25459877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25459877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19219 + ... + 20500.

It is an arithmetic number, because the mean of its divisors is an integer number (6375060).

Almost surely, 2^25459879 is an apocalyptic number.

25459879 is a deficient number, since it is larger than the sum of its proper divisors (40361).

25459879 is an equidigital number, since it uses as much as digits as its factorization.

25459879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40360.

The product of its digits is 907200, while the sum is 49.

The square root of 25459879 is about 5045.7783344099. The cubic root of 25459879 is about 294.1838168980.

The spelling of 25459879 in words is "twenty-five million, four hundred fifty-nine thousand, eight hundred seventy-nine".