25139395 has 8 divisors (see below), whose sum is σ = 30281040. Its totient is φ = 20035680.

The previous prime is 25139383. The next prime is 25139399. The reversal of 25139395 is 59393152.

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

It is not a de Polignac number, because 25139395 - 2⁷ = 25139267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25139399) 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, 8001 + ... + 10690.

It is an arithmetic number, because the mean of its divisors is an integer number (3785130).

Almost surely, 2^25139395 is an apocalyptic number.

25139395 is a deficient number, since it is larger than the sum of its proper divisors (5141645).

25139395 is a wasteful number, since it uses less digits than its factorization.

25139395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18965.

The product of its digits is 36450, while the sum is 37.

The square root of 25139395 is about 5013.9201230175. The cubic root of 25139395 is about 292.9442248045.

The spelling of 25139395 in words is "twenty-five million, one hundred thirty-nine thousand, three hundred ninety-five".