25875642 has 16 divisors (see below), whose sum is σ = 55732320. Its totient is φ = 7961712.

The previous prime is 25875613. The next prime is 25875659. The reversal of 25875642 is 24657852.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 25875642.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 165792 + ... + 165947.

It is an arithmetic number, because the mean of its divisors is an integer number (3483270).

Almost surely, 2^25875642 is an apocalyptic number.

25875642 is an abundant number, since it is smaller than the sum of its proper divisors (29856678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25875642 is a wasteful number, since it uses less digits than its factorization.

25875642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331757.

The product of its digits is 134400, while the sum is 39.

The square root of 25875642 is about 5086.8105921098. The cubic root of 25875642 is about 295.7765311737.

The spelling of 25875642 in words is "twenty-five million, eight hundred seventy-five thousand, six hundred forty-two".