25877139 has 16 divisors (see below), whose sum is σ = 36298752. Its totient is φ = 16365888.

The previous prime is 25877123. The next prime is 25877141. The reversal of 25877139 is 93177852.

It is not a de Polignac number, because 25877139 - 2⁴ = 25877123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25877139.

It is not an unprimeable number, because it can be changed into a prime (25877039) 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 15 ways as a sum of consecutive naturals, for example, 7287 + ... + 10239.

It is an arithmetic number, because the mean of its divisors is an integer number (2268672).

Almost surely, 2^25877139 is an apocalyptic number.

25877139 is a deficient number, since it is larger than the sum of its proper divisors (10421613).

25877139 is a wasteful number, since it uses less digits than its factorization.

25877139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106.

The product of its digits is 105840, while the sum is 42.

The square root of 25877139 is about 5086.9577352284. The cubic root of 25877139 is about 295.7822349797.

The spelling of 25877139 in words is "twenty-five million, eight hundred seventy-seven thousand, one hundred thirty-nine".