18202025 has 12 divisors (see below), whose sum is σ = 22666332. Its totient is φ = 14499840.

The previous prime is 18202003. The next prime is 18202033. The reversal of 18202025 is 52020281.

It can be written as a sum of positive squares in 6 ways, for example, as 326041 + 17875984 = 571^2 + 4228^2 .

It is not a de Polignac number, because 18202025 - 2⁶ = 18201961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18201988 and 18202006.

It is a congruent number.

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, 5009 + ... + 7841.

It is an arithmetic number, because the mean of its divisors is an integer number (1888861).

Almost surely, 2^18202025 is an apocalyptic number.

It is an amenable number.

18202025 is a deficient number, since it is larger than the sum of its proper divisors (4464307).

18202025 is a wasteful number, since it uses less digits than its factorization.

18202025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100 (or 3095 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 18202025 is about 4266.3831285997. The cubic root of 18202025 is about 263.0509667161.

The spelling of 18202025 in words is "eighteen million, two hundred two thousand, twenty-five".