115025591 has 4 divisors (see below), whose sum is σ = 117472992. Its totient is φ = 112578192.

The previous prime is 115025557. The next prime is 115025597. The reversal of 115025591 is 195520511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 195520511 = 2237 ⋅87403.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115025591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115025597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1223630 + ... + 1223723.

It is an arithmetic number, because the mean of its divisors is an integer number (29368248).

Almost surely, 2^115025591 is an apocalyptic number.

115025591 is a deficient number, since it is larger than the sum of its proper divisors (2447401).

115025591 is an equidigital number, since it uses as much as digits as its factorization.

115025591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447400.

The product of its (nonzero) digits is 2250, while the sum is 29.

The square root of 115025591 is about 10724.9984149183. The cubic root of 115025591 is about 486.3304822031.

The spelling of 115025591 in words is "one hundred fifteen million, twenty-five thousand, five hundred ninety-one".