111987925 has 24 divisors (see below), whose sum is σ = 168042816. Its totient is φ = 72272640.

The previous prime is 111987923. The next prime is 111987973. The reversal of 111987925 is 529789111.

It is not a de Polignac number, because 111987925 - 2¹ = 111987923 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111987923) 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, 15847 + ... + 21796.

It is an arithmetic number, because the mean of its divisors is an integer number (7001784).

Almost surely, 2^111987925 is an apocalyptic number.

It is an amenable number.

111987925 is a deficient number, since it is larger than the sum of its proper divisors (56054891).

111987925 is a wasteful number, since it uses less digits than its factorization.

111987925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37677 (or 37672 counting only the distinct ones).

The product of its digits is 45360, while the sum is 43.

The square root of 111987925 is about 10582.4347387546. The cubic root of 111987925 is about 482.0111293149.

It can be divided in two parts, 111 and 987925, that added together give a square (988036 = 994²).

The spelling of 111987925 in words is "one hundred eleven million, nine hundred eighty-seven thousand, nine hundred twenty-five".