18613025 has 12 divisors (see below), whose sum is σ = 23473200. Its totient is φ = 14636880.

The previous prime is 18613019. The next prime is 18613037. The reversal of 18613025 is 52031681.

It is not a de Polignac number, because 18613025 - 2⁴ = 18613009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18612985 and 18613003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4835 + ... + 7784.

It is an arithmetic number, because the mean of its divisors is an integer number (1956100).

Almost surely, 2^18613025 is an apocalyptic number.

It is an amenable number.

18613025 is a deficient number, since it is larger than the sum of its proper divisors (4860175).

18613025 is a wasteful number, since it uses less digits than its factorization.

18613025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12688 (or 12683 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 18613025 is about 4314.2815160812. The cubic root of 18613025 is about 265.0161376194.

The spelling of 18613025 in words is "eighteen million, six hundred thirteen thousand, twenty-five".