15722652100 has 27 divisors (see below), whose sum is σ = 34120876237. Its totient is φ = 6288559280.

The previous prime is 15722652073. The next prime is 15722652103. The reversal of 15722652100 is 125622751.

The square root of 15722652100 is 125390.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5660154756 + 10062497344 = 75234^2 + 100312^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15722652103) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1247631 + ... + 1260169.

Almost surely, 2^15722652100 is an apocalyptic number.

15722652100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15722652100 is the 125390-th square number.

It is an amenable number.

15722652100 is an abundant number, since it is smaller than the sum of its proper divisors (18398224137).

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

15722652100 is an frugal number, since it uses more digits than its factorization.

15722652100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25092 (or 12546 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 15722652100 in words is "fifteen billion, seven hundred twenty-two million, six hundred fifty-two thousand, one hundred".