25878611 has 16 divisors (see below), whose sum is σ = 29652480. Its totient is φ = 22355520.

The previous prime is 25878599. The next prime is 25878613. The reversal of 25878611 is 11687852.

It is not a de Polignac number, because 25878611 - 2¹⁴ = 25862227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25878613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58730 + ... + 59168.

It is an arithmetic number, because the mean of its divisors is an integer number (1853280).

Almost surely, 2^25878611 is an apocalyptic number.

25878611 is a deficient number, since it is larger than the sum of its proper divisors (3773869).

25878611 is a wasteful number, since it uses less digits than its factorization.

25878611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706.

The product of its digits is 26880, while the sum is 38.

The square root of 25878611 is about 5087.1024168971. The cubic root of 25878611 is about 295.7878433173.

The spelling of 25878611 in words is "twenty-five million, eight hundred seventy-eight thousand, six hundred eleven".