286213825 has 24 divisors (see below), whose sum is σ = 367226496. Its totient is φ = 221136000.

The previous prime is 286213787. The next prime is 286213841. The reversal of 286213825 is 528312682.

It is a de Polignac number, because none of the positive numbers 2^k-286213825 is a prime.

It is a super-2 number, since 2×286213825² = 163836707242261250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104220 + ... + 106930.

It is an arithmetic number, because the mean of its divisors is an integer number (15301104).

Almost surely, 2^286213825 is an apocalyptic number.

286213825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

286213825 is a deficient number, since it is larger than the sum of its proper divisors (81012671).

286213825 is a wasteful number, since it uses less digits than its factorization.

286213825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865 (or 2860 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 286213825 is about 16917.8552127626. The cubic root of 286213825 is about 659.0173815285.

The spelling of 286213825 in words is "two hundred eighty-six million, two hundred thirteen thousand, eight hundred twenty-five".