25197430284 has 72 divisors (see below), whose sum is σ = 68719101360. Its totient is φ = 7738803072.

The previous prime is 25197430259. The next prime is 25197430399. The reversal of 25197430284 is 48203479152.

25197430284 is a `hidden beast` number, since 2 + 5 + 197 + 430 + 28 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206782 + ... + 305210.

Almost surely, 2^25197430284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25197430284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34359550680).

25197430284 is an abundant number, since it is smaller than the sum of its proper divisors (43521671076).

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

25197430284 is a wasteful number, since it uses less digits than its factorization.

25197430284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98999 (or 98994 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 25197430284 in words is "twenty-five billion, one hundred ninety-seven million, four hundred thirty thousand, two hundred eighty-four".