25938149 has 4 divisors (see below), whose sum is σ = 26266560. Its totient is φ = 25609740.

The previous prime is 25938139. The next prime is 25938163. The reversal of 25938149 is 94183952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25938149 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 (25938139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164087 + ... + 164244.

It is an arithmetic number, because the mean of its divisors is an integer number (6566640).

Almost surely, 2^25938149 is an apocalyptic number.

It is an amenable number.

25938149 is a deficient number, since it is larger than the sum of its proper divisors (328411).

25938149 is an equidigital number, since it uses as much as digits as its factorization.

25938149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328410.

The product of its digits is 77760, while the sum is 41.

The square root of 25938149 is about 5092.9509127813. The cubic root of 25938149 is about 296.0145057720.

The spelling of 25938149 in words is "twenty-five million, nine hundred thirty-eight thousand, one hundred forty-nine".