25156842252 has 12 divisors (see below), whose sum is σ = 58699298616. Its totient is φ = 8385614080.

The previous prime is 25156842187. The next prime is 25156842257. The reversal of 25156842252 is 25224865152.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (25156842257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048201749 + ... + 1048201772.

It is an arithmetic number, because the mean of its divisors is an integer number (4891608218).

Almost surely, 2^25156842252 is an apocalyptic number.

It is an amenable number.

25156842252 is an abundant number, since it is smaller than the sum of its proper divisors (33542456364).

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

25156842252 is a wasteful number, since it uses less digits than its factorization.

25156842252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096403528 (or 2096403526 counting only the distinct ones).

The product of its digits is 384000, while the sum is 42.

The spelling of 25156842252 in words is "twenty-five billion, one hundred fifty-six million, eight hundred forty-two thousand, two hundred fifty-two".