25139413 has 16 divisors (see below), whose sum is σ = 30179520. Its totient is φ = 20687616.

The previous prime is 25139399. The next prime is 25139423. The reversal of 25139413 is 31493152.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25139413 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 (25139423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1206 + ... + 7192.

It is an arithmetic number, because the mean of its divisors is an integer number (1886220).

Almost surely, 2^25139413 is an apocalyptic number.

It is an amenable number.

25139413 is a deficient number, since it is larger than the sum of its proper divisors (5040107).

25139413 is a wasteful number, since it uses less digits than its factorization.

25139413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6036.

The product of its digits is 3240, while the sum is 28.

The square root of 25139413 is about 5013.9219180199. The cubic root of 25139413 is about 292.9442947212.

It can be divided in two parts, 25139 and 413, that added together give a palindrome (25552).

The spelling of 25139413 in words is "twenty-five million, one hundred thirty-nine thousand, four hundred thirteen".