115857991150225 has 27 divisors (see below), whose sum is σ = 144139762241041. Its totient is φ = 92380401461600.

The previous prime is 115857991150201. The next prime is 115857991150259. The reversal of 115857991150225 is 522051199758511.

The square root of 115857991150225 is 10763735.

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

It can be written as a sum of positive squares in 4 ways, for example, as 46765588300369 + 69092402849856 = 6838537^2 + 8312184^2 .

It is not a de Polignac number, because 115857991150225 - 2¹⁵ = 115857991117457 is a prime.

It is a super-2 number, since 2×115857991150225² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 17060516580 + ... + 17060523370.

Almost surely, 2^{115857991150225} is an apocalyptic number.

115857991150225 is the 10763735-th square number.

115857991150225 is the 5381868-th centered octagonal number.

It is an amenable number.

115857991150225 is a deficient number, since it is larger than the sum of its proper divisors (28281771090816).

115857991150225 is an frugal number, since it uses more digits than its factorization.

115857991150225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14226 (or 7113 counting only the distinct ones).

The product of its (nonzero) digits is 11340000, while the sum is 61.

The spelling of 115857991150225 in words is "one hundred fifteen trillion, eight hundred fifty-seven billion, nine hundred ninety-one million, one hundred fifty thousand, two hundred twenty-five".