25200000084 has 48 divisors (see below), whose sum is σ = 68571440000. Its totient is φ = 7199998848.

The previous prime is 25200000061. The next prime is 25200000107. The reversal of 25200000084 is 48000000252.

It is an interprime number because it is at equal distance from previous prime (25200000061) and next prime (25200000107).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 25200000084.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3057109 + ... + 3065340.

Almost surely, 2^25200000084 is an apocalyptic number.

It is an amenable number.

25200000084 is an abundant number, since it is smaller than the sum of its proper divisors (43371439916).

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

25200000084 is a wasteful number, since it uses less digits than its factorization.

25200000084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6122477 (or 6122461 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The spelling of 25200000084 in words is "twenty-five billion, two hundred million, eighty-four", and thus it is an aban number.