115540425 has 288 divisors, whose sum is σ = 303313920. Its totient is φ = 41990400.

The previous prime is 115540393. The next prime is 115540427. The reversal of 115540425 is 524045511.

115540425 is a `hidden beast` number, since 115 + 540 + 4 + 2 + 5 = 666.

It is not a de Polignac number, because 115540425 - 2⁵ = 115540393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (115540427) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 6081066 + ... + 6081084.

Almost surely, 2^115540425 is an apocalyptic number.

115540425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115540425 is an abundant number, since it is smaller than the sum of its proper divisors (187773495).

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

115540425 is a wasteful number, since it uses less digits than its factorization.

115540425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 115540425 is about 10748.9732067765. The cubic root of 115540425 is about 487.0549784946.

115540425 divided by its sum of digits (27) gives a triangular number (4279275 = T₂₉₂₅).

Adding to 115540425 its reverse (524045511), we get a palindrome (639585936).

The spelling of 115540425 in words is "one hundred fifteen million, five hundred forty thousand, four hundred twenty-five".