25202243712 has 32 divisors (see below), whose sum is σ = 66943460880. Its totient is φ = 8400747776.

The previous prime is 25202243699. The next prime is 25202243743. The reversal of 25202243712 is 21734220252.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 25202243712.

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 3 ways as a sum of consecutive naturals, for example, 32815038 + ... + 32815805.

Almost surely, 2^25202243712 is an apocalyptic number.

It is an amenable number.

25202243712 is an abundant number, since it is smaller than the sum of its proper divisors (41741217168).

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

25202243712 is an equidigital number, since it uses as much as digits as its factorization.

25202243712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65630860 (or 65630848 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

Adding to 25202243712 its reverse (21734220252), we get a palindrome (46936463964).

The spelling of 25202243712 in words is "twenty-five billion, two hundred two million, two hundred forty-three thousand, seven hundred twelve".