25218084 has 24 divisors (see below), whose sum is σ = 59427648. Its totient is φ = 8322400.

The previous prime is 25218079. The next prime is 25218091. The reversal of 25218084 is 48081252.

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, 9192 + ... + 11615.

It is an arithmetic number, because the mean of its divisors is an integer number (2476152).

Almost surely, 2^25218084 is an apocalyptic number.

It is an amenable number.

25218084 is an abundant number, since it is smaller than the sum of its proper divisors (34209564).

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

25218084 is a wasteful number, since it uses less digits than its factorization.

25218084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20915 (or 20913 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 25218084 is about 5021.7610456891. The cubic root of 25218084 is about 293.2495553906.

It can be divided in two parts, 252 and 18084, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 25218084 in words is "twenty-five million, two hundred eighteen thousand, eighty-four".