25196139 has 12 divisors (see below), whose sum is σ = 36461776. Its totient is φ = 16766352.

The previous prime is 25196137. The next prime is 25196141. The reversal of 25196139 is 93169152.

25196139 is a `hidden beast` number, since 2 + 519 + 6 + 139 = 666.

It is an interprime number because it is at equal distance from previous prime (25196137) and next prime (25196141).

It is not a de Polignac number, because 25196139 - 2¹ = 25196137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25196131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3234 + ... + 7800.

Almost surely, 2^25196139 is an apocalyptic number.

25196139 is a deficient number, since it is larger than the sum of its proper divisors (11265637).

25196139 is a wasteful number, since it uses less digits than its factorization.

25196139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186 (or 5183 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 25196139 is about 5019.5755796681. The cubic root of 25196139 is about 293.1644679180.

The spelling of 25196139 in words is "twenty-five million, one hundred ninety-six thousand, one hundred thirty-nine".