20525351100 has 144 divisors (see below), whose sum is σ = 61386071040. Its totient is φ = 5289638400.

The previous prime is 20525351071. The next prime is 20525351111. The reversal of 20525351100 is 115352502.

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 47 ways as a sum of consecutive naturals, for example, 11707824 + ... + 11709576.

It is an arithmetic number, because the mean of its divisors is an integer number (426292160).

Almost surely, 2^20525351100 is an apocalyptic number.

20525351100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20525351100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30693035520).

20525351100 is an abundant number, since it is smaller than the sum of its proper divisors (40860719940).

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

20525351100 is a wasteful number, since it uses less digits than its factorization.

20525351100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060 (or 3053 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The spelling of 20525351100 in words is "twenty billion, five hundred twenty-five million, three hundred fifty-one thousand, one hundred".