25139148 has 12 divisors (see below), whose sum is σ = 58658040. Its totient is φ = 8379712.

The previous prime is 25139129. The next prime is 25139159. The reversal of 25139148 is 84193152.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047453 + ... + 1047476.

It is an arithmetic number, because the mean of its divisors is an integer number (4888170).

Almost surely, 2^25139148 is an apocalyptic number.

It is an amenable number.

25139148 is an abundant number, since it is smaller than the sum of its proper divisors (33518892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25139148 is a wasteful number, since it uses less digits than its factorization.

25139148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094936 (or 2094934 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 25139148 is about 5013.8954915315. The cubic root of 25139148 is about 292.9432653878.

The spelling of 25139148 in words is "twenty-five million, one hundred thirty-nine thousand, one hundred forty-eight".