25279259 has 4 divisors (see below), whose sum is σ = 25290600. Its totient is φ = 25267920.

The previous prime is 25279249. The next prime is 25279273. The reversal of 25279259 is 95297252.

It is a semiprime because it is the product of two primes, 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 25279259 - 2¹² = 25275163 is a prime.

It is a Duffinian number.

25279259 is a Rhonda number in base 10.

Its product of digits (113400) is a multiple of the sum of its prime divisors (11340).

It is not an unprimeable number, because it can be changed into a prime (25279249) 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, 1097 + ... + 7194.

It is an arithmetic number, because the mean of its divisors is an integer number (6322650).

Almost surely, 2^25279259 is an apocalyptic number.

25279259 is a deficient number, since it is larger than the sum of its proper divisors (11341).

25279259 is an equidigital number, since it uses as much as digits as its factorization.

25279259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11340.

The product of its digits is 113400, while the sum is 41.

The square root of 25279259 is about 5027.8483469572. The cubic root of 25279259 is about 293.4864892635.

The spelling of 25279259 in words is "twenty-five million, two hundred seventy-nine thousand, two hundred fifty-nine".