285825406 has 4 divisors (see below), whose sum is σ = 428738112. Its totient is φ = 142912702.

The previous prime is 285825373. The next prime is 285825467. The reversal of 285825406 is 604528582.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71456350 + ... + 71456353.

It is an arithmetic number, because the mean of its divisors is an integer number (107184528).

Almost surely, 2^285825406 is an apocalyptic number.

285825406 is a deficient number, since it is larger than the sum of its proper divisors (142912706).

285825406 is a wasteful number, since it uses less digits than its factorization.

285825406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142912705.

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 285825406 is about 16906.3717574174. The cubic root of 285825406 is about 658.7191304410.

The spelling of 285825406 in words is "two hundred eighty-five million, eight hundred twenty-five thousand, four hundred six".