25239269 has 6 divisors (see below), whose sum is σ = 27742470. Its totient is φ = 22944680.

The previous prime is 25239233. The next prime is 25239281. The reversal of 25239269 is 96293252.

It can be written as a sum of positive squares in only one way, i.e., 23639044 + 1600225 = 4862^2 + 1265^2 .

It is not a de Polignac number, because 25239269 - 2²⁰ = 24190693 is a prime.

It is a super-2 number, since 2×25239269² = 1274041399308722, 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 (25239209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104174 + ... + 104415.

It is an arithmetic number, because the mean of its divisors is an integer number (4623745).

Almost surely, 2^25239269 is an apocalyptic number.

It is an amenable number.

25239269 is a deficient number, since it is larger than the sum of its proper divisors (2503201).

25239269 is a wasteful number, since it uses less digits than its factorization.

25239269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208611 (or 208600 counting only the distinct ones).

The product of its digits is 58320, while the sum is 38.

The square root of 25239269 is about 5023.8699226791. The cubic root of 25239269 is about 293.3316492959.

The spelling of 25239269 in words is "twenty-five million, two hundred thirty-nine thousand, two hundred sixty-nine".