25239079 has 4 divisors (see below), whose sum is σ = 25666920. Its totient is φ = 24811240.

The previous prime is 25239061. The next prime is 25239107. The reversal of 25239079 is 97093252.

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 25239079 - 2⁷ = 25238951 is a prime.

It is a super-2 number, since 2×25239079² = 1274022217536482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25239029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213832 + ... + 213949.

It is an arithmetic number, because the mean of its divisors is an integer number (6416730).

Almost surely, 2^25239079 is an apocalyptic number.

25239079 is a deficient number, since it is larger than the sum of its proper divisors (427841).

25239079 is an equidigital number, since it uses as much as digits as its factorization.

25239079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427840.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 25239079 is about 5023.8510129183. The cubic root of 25239079 is about 293.3309132319.

The spelling of 25239079 in words is "twenty-five million, two hundred thirty-nine thousand, seventy-nine".