18044625 has 16 divisors (see below), whose sum is σ = 30026880. Its totient is φ = 9623600.

The previous prime is 18044603. The next prime is 18044629. The reversal of 18044625 is 52644081.

It is not a de Polignac number, because 18044625 - 2⁶ = 18044561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18044592 and 18044601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18044629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23685 + ... + 24434.

It is an arithmetic number, because the mean of its divisors is an integer number (1876680).

Almost surely, 2^18044625 is an apocalyptic number.

18044625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18044625 is a deficient number, since it is larger than the sum of its proper divisors (11982255).

18044625 is an equidigital number, since it uses as much as digits as its factorization.

18044625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48137 (or 48127 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 18044625 is about 4247.8965382881. The cubic root of 18044625 is about 262.2905358486.

The spelling of 18044625 in words is "eighteen million, forty-four thousand, six hundred twenty-five".