25139229 has 16 divisors (see below), whose sum is σ = 34212864. Its totient is φ = 16416000.

The previous prime is 25139227. The next prime is 25139239. The reversal of 25139229 is 92293152.

It is not a de Polignac number, because 25139229 - 2¹ = 25139227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25139229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25139227) 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, 41529 + ... + 42129.

It is an arithmetic number, because the mean of its divisors is an integer number (2138304).

Almost surely, 2^25139229 is an apocalyptic number.

It is an amenable number.

25139229 is a deficient number, since it is larger than the sum of its proper divisors (9073635).

25139229 is a wasteful number, since it uses less digits than its factorization.

25139229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868.

The product of its digits is 9720, while the sum is 33.

The square root of 25139229 is about 5013.9035690767. The cubic root of 25139229 is about 292.9435800150.

The spelling of 25139229 in words is "twenty-five million, one hundred thirty-nine thousand, two hundred twenty-nine".