15876252001 has 3 divisors (see below), whose sum is σ = 15876378003. Its totient is φ = 15876126000.

The previous prime is 15876251999. The next prime is 15876252011. The reversal of 15876252001 is 10025267851.

The square root of 15876252001 is 126001.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10025267851 = 89 ⋅112643459.

It can be written as a sum of positive squares in only one way, i.e., 7047770401 + 8828481600 = 83951^2 + 93960^2 .

It is not a de Polignac number, because 15876252001 - 2¹ = 15876251999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15876252011) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 63001 + ... + 189001.

It is an arithmetic number, because the mean of its divisors is an integer number (5292126001).

Almost surely, 2^15876252001 is an apocalyptic number.

15876252001 is the 126001-st square number.

15876252001 is the 63001-st centered octagonal number.

It is an amenable number.

15876252001 is a deficient number, since it is larger than the sum of its proper divisors (126002).

15876252001 is an frugal number, since it uses more digits than its factorization.

15876252001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252002 (or 126001 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 15876252001 in words is "fifteen billion, eight hundred seventy-six million, two hundred fifty-two thousand, one".