115225631 has 4 divisors (see below), whose sum is σ = 116066832. Its totient is φ = 114384432.

The previous prime is 115225603. The next prime is 115225673. The reversal of 115225631 is 136522511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136522511 = 263 ⋅519097.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115225631 is a prime.

It is a super-2 number, since 2×115225631² = 26553892078696322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115225631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115225601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420395 + ... + 420668.

It is an arithmetic number, because the mean of its divisors is an integer number (29016708).

Almost surely, 2^115225631 is an apocalyptic number.

115225631 is a deficient number, since it is larger than the sum of its proper divisors (841201).

115225631 is an equidigital number, since it uses as much as digits as its factorization.

115225631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841200.

The product of its digits is 1800, while the sum is 26.

The square root of 115225631 is about 10734.3202393072. The cubic root of 115225631 is about 486.6122432938.

The spelling of 115225631 in words is "one hundred fifteen million, two hundred twenty-five thousand, six hundred thirty-one".