25038139 has 8 divisors (see below), whose sum is σ = 28647648. Its totient is φ = 21436800.

The previous prime is 25038137. The next prime is 25038151. The reversal of 25038139 is 93183052.

It is a happy number.

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

It is not a de Polignac number, because 25038139 - 2¹ = 25038137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25038139.

It is not an unprimeable number, because it can be changed into a prime (25038137) 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, 7539 + ... + 10339.

It is an arithmetic number, because the mean of its divisors is an integer number (3580956).

Almost surely, 2^25038139 is an apocalyptic number.

25038139 is a deficient number, since it is larger than the sum of its proper divisors (3609509).

25038139 is a wasteful number, since it uses less digits than its factorization.

25038139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4085.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 25038139 is about 5003.8124465251. The cubic root of 25038139 is about 292.5503904224.

The spelling of 25038139 in words is "twenty-five million, thirty-eight thousand, one hundred thirty-nine".