118025881 has 4 divisors (see below), whose sum is σ = 118122532. Its totient is φ = 117929232.

The previous prime is 118025879. The next prime is 118025899. The reversal of 118025881 is 188520811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 188520811 = 23 ⋅8196557.

It can be written as a sum of positive squares in 2 ways, for example, as 56010256 + 62015625 = 7484^2 + 7875^2 .

It is a cyclic number.

It is not a de Polignac number, because 118025881 - 2¹ = 118025879 is a prime.

It is a super-2 number, since 2×118025881² = 27860217171652322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118025801) 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, 46470 + ... + 48943.

It is an arithmetic number, because the mean of its divisors is an integer number (29530633).

Almost surely, 2^118025881 is an apocalyptic number.

It is an amenable number.

118025881 is a deficient number, since it is larger than the sum of its proper divisors (96651).

118025881 is an equidigital number, since it uses as much as digits as its factorization.

118025881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96650.

The product of its (nonzero) digits is 5120, while the sum is 34.

The square root of 118025881 is about 10863.9716954712. The cubic root of 118025881 is about 490.5226701051.

The spelling of 118025881 in words is "one hundred eighteen million, twenty-five thousand, eight hundred eighty-one".