18373725 has 36 divisors (see below), whose sum is σ = 33220096. Its totient is φ = 9707040.

The previous prime is 18373723. The next prime is 18373727. The reversal of 18373725 is 52737381.

It is an interprime number because it is at equal distance from previous prime (18373723) and next prime (18373727).

It is not a de Polignac number, because 18373725 - 2¹ = 18373723 is a prime.

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 18373725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18373723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28254 + ... + 28896.

Almost surely, 2^18373725 is an apocalyptic number.

18373725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18373725 is a deficient number, since it is larger than the sum of its proper divisors (14846371).

18373725 is a wasteful number, since it uses less digits than its factorization.

18373725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 778 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 18373725 is about 4286.4583282706. The cubic root of 18373725 is about 263.8755008700.

The spelling of 18373725 in words is "eighteen million, three hundred seventy-three thousand, seven hundred twenty-five".