18814825 has 6 divisors (see below), whose sum is σ = 23330414. Its totient is φ = 15051840.

The previous prime is 18814819. The next prime is 18814847. The reversal of 18814825 is 52841881.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3283344 + 15531481 = 1812^2 + 3941^2 .

It is not a de Polignac number, because 18814825 - 2¹¹ = 18812777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 376272 + ... + 376321.

Almost surely, 2^18814825 is an apocalyptic number.

It is an amenable number.

18814825 is a deficient number, since it is larger than the sum of its proper divisors (4515589).

18814825 is an equidigital number, since it uses as much as digits as its factorization.

18814825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752603 (or 752598 counting only the distinct ones).

The product of its digits is 20480, while the sum is 37.

The square root of 18814825 is about 4337.6059064880. The cubic root of 18814825 is about 265.9704538762.

The spelling of 18814825 in words is "eighteen million, eight hundred fourteen thousand, eight hundred twenty-five".