25975139 has 4 divisors (see below), whose sum is σ = 26579256. Its totient is φ = 25371024.

The previous prime is 25975127. The next prime is 25975151. The reversal of 25975139 is 93157952.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25975127) and next prime (25975151).

It is a cyclic number.

It is not a de Polignac number, because 25975139 - 2⁴ = 25975123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25975096 and 25975105.

It is not an unprimeable number, because it can be changed into a prime (25975199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301994 + ... + 302079.

It is an arithmetic number, because the mean of its divisors is an integer number (6644814).

Almost surely, 2^25975139 is an apocalyptic number.

25975139 is a deficient number, since it is larger than the sum of its proper divisors (604117).

25975139 is an equidigital number, since it uses as much as digits as its factorization.

25975139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604116.

The product of its digits is 85050, while the sum is 41.

The square root of 25975139 is about 5096.5811089396. The cubic root of 25975139 is about 296.1551528639.

The spelling of 25975139 in words is "twenty-five million, nine hundred seventy-five thousand, one hundred thirty-nine".