15766852725 has 144 divisors (see below), whose sum is σ = 32508075600. Its totient is φ = 7236034560.

The previous prime is 15766852709. The next prime is 15766852741. The reversal of 15766852725 is 52725866751.

15766852725 is a `hidden beast` number, since 1 + 57 + 6 + 68 + 527 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (15766852709) and next prime (15766852741).

It can be written as a sum of positive squares in 24 ways, for example, as 6040553841 + 9726298884 = 77721^2 + 98622^2 .

It is not a de Polignac number, because 15766852725 - 2⁴ = 15766852709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5418571 + ... + 5421479.

It is an arithmetic number, because the mean of its divisors is an integer number (225750525).

Almost surely, 2^15766852725 is an apocalyptic number.

15766852725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15766852725 is an abundant number, since it is smaller than the sum of its proper divisors (16741222875).

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

15766852725 is a wasteful number, since it uses less digits than its factorization.

15766852725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064 (or 3056 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 54.

The spelling of 15766852725 in words is "fifteen billion, seven hundred sixty-six million, eight hundred fifty-two thousand, seven hundred twenty-five".