18825025 has 6 divisors (see below), whose sum is σ = 23343062. Its totient is φ = 15060000.

The previous prime is 18825007. The next prime is 18825041. The reversal of 18825025 is 52052881.

It can be written as a sum of positive squares in 3 ways, for example, as 1252161 + 17572864 = 1119^2 + 4192^2 .

It is not a de Polignac number, because 18825025 - 2⁹ = 18824513 is a prime.

It is a Duffinian number.

It is a congruent 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, 376476 + ... + 376525.

Almost surely, 2^18825025 is an apocalyptic number.

It is an amenable number.

18825025 is a deficient number, since it is larger than the sum of its proper divisors (4518037).

18825025 is an equidigital number, since it uses as much as digits as its factorization.

18825025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753011 (or 753006 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 18825025 is about 4338.7815109775. The cubic root of 18825025 is about 266.0185083321.

The spelling of 18825025 in words is "eighteen million, eight hundred twenty-five thousand, twenty-five".