286188225 has 12 divisors (see below), whose sum is σ = 473164656. Its totient is φ = 152633680.

The previous prime is 286188197. The next prime is 286188239. The reversal of 286188225 is 522881682.

It is not a de Polignac number, because 286188225 - 2⁵ = 286188193 is a prime.

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, 1907847 + ... + 1907996.

It is an arithmetic number, because the mean of its divisors is an integer number (39430388).

Almost surely, 2^286188225 is an apocalyptic number.

286188225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

286188225 is a deficient number, since it is larger than the sum of its proper divisors (186976431).

286188225 is a wasteful number, since it uses less digits than its factorization.

286188225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815856 (or 3815851 counting only the distinct ones).

The product of its digits is 122880, while the sum is 42.

The square root of 286188225 is about 16917.0985987550. The cubic root of 286188225 is about 658.9977326430.

The spelling of 286188225 in words is "two hundred eighty-six million, one hundred eighty-eight thousand, two hundred twenty-five".