25265239 has 4 divisors (see below), whose sum is σ = 25392400. Its totient is φ = 25138080.

The previous prime is 25265237. The next prime is 25265243. The reversal of 25265239 is 93256252.

It is a happy number.

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 25265239 - 2¹ = 25265237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25265237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63282 + ... + 63679.

It is an arithmetic number, because the mean of its divisors is an integer number (6348100).

Almost surely, 2^25265239 is an apocalyptic number.

25265239 is a deficient number, since it is larger than the sum of its proper divisors (127161).

25265239 is a wasteful number, since it uses less digits than its factorization.

25265239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127160.

The product of its digits is 32400, while the sum is 34.

The square root of 25265239 is about 5026.4539190169. The cubic root of 25265239 is about 293.4322228853.

The spelling of 25265239 in words is "twenty-five million, two hundred sixty-five thousand, two hundred thirty-nine".