285625620 has 144 divisors (see below), whose sum is σ = 994401408. Its totient is φ = 65007360.

The previous prime is 285625603. The next prime is 285625631. The reversal of 285625620 is 26526582.

285625620 is a `hidden beast` number, since 2 + 8 + 5 + 6 + 25 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 499935 + ... + 500505.

Almost surely, 2^285625620 is an apocalyptic number.

285625620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285625620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (497200704).

285625620 is an abundant number, since it is smaller than the sum of its proper divisors (708775788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285625620 is a wasteful number, since it uses less digits than its factorization.

285625620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 285625620 is about 16900.4621238592. The cubic root of 285625620 is about 658.5656176882.

The spelling of 285625620 in words is "two hundred eighty-five million, six hundred twenty-five thousand, six hundred twenty".