25251239 has 8 divisors (see below), whose sum is σ = 28793520. Its totient is φ = 21937536.

The previous prime is 25251227. The next prime is 25251287. The reversal of 25251239 is 93215252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25251239 - 2⁴ = 25251223 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 (25251139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56909 + ... + 57350.

It is an arithmetic number, because the mean of its divisors is an integer number (3599190).

Almost surely, 2^25251239 is an apocalyptic number.

25251239 is a deficient number, since it is larger than the sum of its proper divisors (3542281).

25251239 is a wasteful number, since it uses less digits than its factorization.

25251239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114289.

The product of its digits is 5400, while the sum is 29.

The square root of 25251239 is about 5025.0610941560. The cubic root of 25251239 is about 293.3780138838.

The spelling of 25251239 in words is "twenty-five million, two hundred fifty-one thousand, two hundred thirty-nine".