18669025 has 12 divisors (see below), whose sum is σ = 23212800. Its totient is φ = 14894480.

The previous prime is 18669017. The next prime is 18669029. The reversal of 18669025 is 52096681.

It is not a de Polignac number, because 18669025 - 2³ = 18669017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18669029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11196 + ... + 12754.

It is an arithmetic number, because the mean of its divisors is an integer number (1934400).

Almost surely, 2^18669025 is an apocalyptic number.

It is an amenable number.

18669025 is a deficient number, since it is larger than the sum of its proper divisors (4543775).

18669025 is a wasteful number, since it uses less digits than its factorization.

18669025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048 (or 2043 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 18669025 is about 4320.7667143691. The cubic root of 18669025 is about 265.2816514170.

The spelling of 18669025 in words is "eighteen million, six hundred sixty-nine thousand, twenty-five".