18963225 has 36 divisors (see below), whose sum is σ = 34200192. Its totient is φ = 10044000.

The previous prime is 18963221. The next prime is 18963229. The reversal of 18963225 is 52236981.

18963225 is a `hidden beast` number, since 18 + 9 + 632 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (18963221) and next prime (18963229).

It is not a de Polignac number, because 18963225 - 2² = 18963221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18963225.

It is not an unprimeable number, because it can be changed into a prime (18963221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 60820 + ... + 61130.

Almost surely, 2^18963225 is an apocalyptic number.

18963225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18963225 is a deficient number, since it is larger than the sum of its proper divisors (15236967).

18963225 is a wasteful number, since it uses less digits than its factorization.

18963225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 590 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 18963225 is about 4354.6785185591. The cubic root of 18963225 is about 266.6678949596.

The spelling of 18963225 in words is "eighteen million, nine hundred sixty-three thousand, two hundred twenty-five".