15530338131025 has 81 divisors (see below), whose sum is σ = 20781065373523. Its totient is φ = 11511079820800.

The previous prime is 15530338130971. The next prime is 15530338131089. The reversal of 15530338131025 is 52013183303551.

The square root of 15530338131025 is 3940855.

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

15530338131025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 13 ways, for example, as 9738537559569 + 5791800571456 = 3120663^2 + 2406616^2 .

It is not a de Polignac number, because 15530338131025 - 2¹⁵ = 15530338098257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 23783059599 + ... + 23783060251.

Almost surely, 2^{15530338131025} is an apocalyptic number.

15530338131025 is the 3940855-th square number.

15530338131025 is the 1970428-th centered octagonal number.

It is an amenable number.

15530338131025 is a deficient number, since it is larger than the sum of its proper divisors (5250727242498).

15530338131025 is an frugal number, since it uses more digits than its factorization.

15530338131025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 15530338131025 in words is "fifteen trillion, five hundred thirty billion, three hundred thirty-eight million, one hundred thirty-one thousand, twenty-five".