18967725 has 36 divisors (see below), whose sum is σ = 38829856. Its totient is φ = 8670240.

The previous prime is 18967673. The next prime is 18967727. The reversal of 18967725 is 52776981.

It is not a de Polignac number, because 18967725 - 2⁹ = 18967213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18967727) 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, 4447 + ... + 7596.

Almost surely, 2^18967725 is an apocalyptic number.

18967725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18967725 is an abundant number, since it is smaller than the sum of its proper divisors (19862131).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18967725 is a wasteful number, since it uses less digits than its factorization.

18967725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12066 (or 12058 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 18967725 is about 4355.1951735829. The cubic root of 18967725 is about 266.6889868470.

The spelling of 18967725 in words is "eighteen million, nine hundred sixty-seven thousand, seven hundred twenty-five".