20625802016 has 24 divisors (see below), whose sum is σ = 40638294144. Its totient is φ = 10304965440.

The previous prime is 20625801971. The next prime is 20625802019. The reversal of 20625802016 is 61020852602.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (20625802019) 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, 205640 + ... + 289031.

It is an arithmetic number, because the mean of its divisors is an integer number (1693262256).

Almost surely, 2^20625802016 is an apocalyptic number.

It is an amenable number.

20625802016 is a deficient number, since it is larger than the sum of its proper divisors (20012492128).

20625802016 is a wasteful number, since it uses less digits than its factorization.

20625802016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495984 (or 495976 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 20625802016 in words is "twenty billion, six hundred twenty-five million, eight hundred two thousand, sixteen".