220787325 has 72 divisors (see below), whose sum is σ = 443248416. Its totient is φ = 104112000.

The previous prime is 220787321. The next prime is 220787407. The reversal of 220787325 is 523787022.

It is a happy number.

It is not a de Polignac number, because 220787325 - 2² = 220787321 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 220787325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220787321) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 90370 + ... + 92780.

It is an arithmetic number, because the mean of its divisors is an integer number (6156228).

Almost surely, 2^220787325 is an apocalyptic number.

220787325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220787325 is an abundant number, since it is smaller than the sum of its proper divisors (222461091).

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

220787325 is a wasteful number, since it uses less digits than its factorization.

220787325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475 (or 2467 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 220787325 is about 14858.9139912714. The cubic root of 220787325 is about 604.4003575294.

It can be divided in two parts, 22078 and 7325, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 220787325 in words is "two hundred twenty million, seven hundred eighty-seven thousand, three hundred twenty-five".