118781025 has 24 divisors (see below), whose sum is σ = 214239264. Its totient is φ = 57590400.

The previous prime is 118781009. The next prime is 118781029. The reversal of 118781025 is 520187811.

It is not a de Polignac number, because 118781025 - 2⁴ = 118781009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118781029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71164 + ... + 72813.

It is an arithmetic number, because the mean of its divisors is an integer number (8926636).

Almost surely, 2^118781025 is an apocalyptic number.

118781025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118781025 is a deficient number, since it is larger than the sum of its proper divisors (95458239).

118781025 is a wasteful number, since it uses less digits than its factorization.

118781025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144001 (or 143996 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 33.

The square root of 118781025 is about 10898.6707905139. The cubic root of 118781025 is about 491.5665882040.

The spelling of 118781025 in words is "one hundred eighteen million, seven hundred eighty-one thousand, twenty-five".