18225025 has 24 divisors (see below), whose sum is σ = 27817664. Its totient is φ = 11534400.

The previous prime is 18225023. The next prime is 18225043. The reversal of 18225025 is 52052281.

It is not a de Polignac number, because 18225025 - 2¹ = 18225023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (18225023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1731 + ... + 6280.

Almost surely, 2^18225025 is an apocalyptic number.

It is an amenable number.

18225025 is a deficient number, since it is larger than the sum of its proper divisors (9592639).

18225025 is a wasteful number, since it uses less digits than its factorization.

18225025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8041 (or 8036 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 18225025 is about 4269.0777692612. The cubic root of 18225025 is about 263.1617167691.

The spelling of 18225025 in words is "eighteen million, two hundred twenty-five thousand, twenty-five".