818818025 has 12 divisors (see below), whose sum is σ = 1017048000. Its totient is φ = 653948880.

The previous prime is 818818019. The next prime is 818818043. The reversal of 818818025 is 520818818.

It is not a de Polignac number, because 818818025 - 2¹² = 818813929 is a prime.

It is a Curzon 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, 12365 + ... + 42314.

It is an arithmetic number, because the mean of its divisors is an integer number (84754000).

Almost surely, 2^818818025 is an apocalyptic number.

It is an amenable number.

818818025 is a deficient number, since it is larger than the sum of its proper divisors (198229975).

818818025 is a wasteful number, since it uses less digits than its factorization.

818818025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55288 (or 55283 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 41.

The square root of 818818025 is about 28614.9965053292. The cubic root of 818818025 is about 935.5402237130.

The spelling of 818818025 in words is "eight hundred eighteen million, eight hundred eighteen thousand, twenty-five".