25867284 has 24 divisors (see below), whose sum is σ = 63534240. Its totient is φ = 8168544.

The previous prime is 25867273. The next prime is 25867297. The reversal of 25867284 is 48276852.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56499 + ... + 56954.

It is an arithmetic number, because the mean of its divisors is an integer number (2647260).

Almost surely, 2^25867284 is an apocalyptic number.

It is an amenable number.

25867284 is an abundant number, since it is smaller than the sum of its proper divisors (37666956).

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

25867284 is a wasteful number, since it uses less digits than its factorization.

25867284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113479 (or 113477 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 25867284 is about 5085.9889893707. The cubic root of 25867284 is about 295.7446818323.

It can be divided in two parts, 2586 and 7284, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 25867284 in words is "twenty-five million, eight hundred sixty-seven thousand, two hundred eighty-four".