25957139 has 8 divisors (see below), whose sum is σ = 28022400. Its totient is φ = 23901696.

The previous prime is 25957111. The next prime is 25957153. The reversal of 25957139 is 93175952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25957139 - 2¹² = 25953043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25957096 and 25957105.

It is not an unprimeable number, because it can be changed into a prime (25957159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3614 + ... + 8060.

It is an arithmetic number, because the mean of its divisors is an integer number (3502800).

Almost surely, 2^25957139 is an apocalyptic number.

25957139 is a deficient number, since it is larger than the sum of its proper divisors (2065261).

25957139 is a wasteful number, since it uses less digits than its factorization.

25957139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4909.

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

The square root of 25957139 is about 5094.8149132231. The cubic root of 25957139 is about 296.0867281471.

The spelling of 25957139 in words is "twenty-five million, nine hundred fifty-seven thousand, one hundred thirty-nine".