20005625244 has 24 divisors (see below), whose sum is σ = 50923410048. Its totient is φ = 6062310640.

The previous prime is 20005625149. The next prime is 20005625287. The reversal of 20005625244 is 44252650002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75778752 + ... + 75779015.

It is an arithmetic number, because the mean of its divisors is an integer number (2121808752).

Almost surely, 2^20005625244 is an apocalyptic number.

It is an amenable number.

20005625244 is an abundant number, since it is smaller than the sum of its proper divisors (30917784804).

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

20005625244 is a wasteful number, since it uses less digits than its factorization.

20005625244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151557785 (or 151557783 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 20005625244 in words is "twenty billion, five million, six hundred twenty-five thousand, two hundred forty-four".