115731250 has 24 divisors (see below), whose sum is σ = 216993924. Its totient is φ = 46290000.

The previous prime is 115731229. The next prime is 115731263. The reversal of 115731250 is 52137511.

It can be written as a sum of positive squares in 6 ways, for example, as 23590449 + 92140801 = 4857^2 + 9599^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3009 + ... + 15508.

Almost surely, 2^115731250 is an apocalyptic number.

115731250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115731250 is a deficient number, since it is larger than the sum of its proper divisors (101262674).

115731250 is an frugal number, since it uses more digits than its factorization.

115731250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18544 (or 18524 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 115731250 is about 10757.8459739857. The cubic root of 115731250 is about 487.3229688128.

Adding to 115731250 its reverse (52137511), we get a palindrome (167868761).

The spelling of 115731250 in words is "one hundred fifteen million, seven hundred thirty-one thousand, two hundred fifty".