15270780625 has 15 divisors (see below), whose sum is σ = 19086228733. Its totient is φ = 12214153000.

The previous prime is 15270780601. The next prime is 15270780631. The reversal of 15270780625 is 52608707251.

The square root of 15270780625 is 123575.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1197229201 + 14073551424 = 34601^2 + 118632^2 .

It is not a de Polignac number, because 15270780625 - 2⁹ = 15270780113 is a prime.

It is a Duffinian 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 14 ways as a sum of consecutive naturals, for example, 3086904 + ... + 3091846.

Almost surely, 2^15270780625 is an apocalyptic number.

15270780625 is the 123575-th square number.

15270780625 is the 61788-th centered octagonal number.

It is an amenable number.

15270780625 is a deficient number, since it is larger than the sum of its proper divisors (3815448108).

15270780625 is an frugal number, since it uses more digits than its factorization.

15270780625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9906 (or 4948 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 43.

It can be divided in two parts, 152707 and 80625, that added together give a palindrome (233332).

The spelling of 15270780625 in words is "fifteen billion, two hundred seventy million, seven hundred eighty thousand, six hundred twenty-five".