25628156224 has 84 divisors (see below), whose sum is σ = 55991030004. Its totient is φ = 11630080000.

The previous prime is 25628156207. The next prime is 25628156231. The reversal of 25628156224 is 42265182652.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18341826624 + 7286329600 = 135432^2 + 85360^2 .

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 5426184 + ... + 5430904.

It is an arithmetic number, because the mean of its divisors is an integer number (666559881).

Almost surely, 2^25628156224 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 25628156224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27995515002).

25628156224 is an abundant number, since it is smaller than the sum of its proper divisors (30362873780).

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

25628156224 is a wasteful number, since it uses less digits than its factorization.

25628156224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5456 (or 5435 counting only the distinct ones).

The product of its digits is 460800, while the sum is 43.

The spelling of 25628156224 in words is "twenty-five billion, six hundred twenty-eight million, one hundred fifty-six thousand, two hundred twenty-four".