18022625 has 16 divisors (see below), whose sum is σ = 23222784. Its totient is φ = 13950000.

The previous prime is 18022591. The next prime is 18022643. The reversal of 18022625 is 52622081.

It is not a de Polignac number, because 18022625 - 2¹² = 18018529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18022594 and 18022603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1550 + ... + 6200.

It is an arithmetic number, because the mean of its divisors is an integer number (1451424).

Almost surely, 2^18022625 is an apocalyptic number.

It is an amenable number.

18022625 is a deficient number, since it is larger than the sum of its proper divisors (5200159).

18022625 is an equidigital number, since it uses as much as digits as its factorization.

18022625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4697 (or 4687 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 18022625 is about 4245.3062315927. The cubic root of 18022625 is about 262.1838976583.

The spelling of 18022625 in words is "eighteen million, twenty-two thousand, six hundred twenty-five".