220785072725 has 48 divisors (see below), whose sum is σ = 320851035648. Its totient is φ = 147555656640.

The previous prime is 220785072721. The next prime is 220785072727. The reversal of 220785072725 is 527270587022.

It is not a de Polignac number, because 220785072725 - 2² = 220785072721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220785072725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220785072721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3482762 + ... + 3545588.

It is an arithmetic number, because the mean of its divisors is an integer number (6684396576).

Almost surely, 2^220785072725 is an apocalyptic number.

220785072725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220785072725 is a deficient number, since it is larger than the sum of its proper divisors (100065962923).

220785072725 is a wasteful number, since it uses less digits than its factorization.

220785072725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63354 (or 63349 counting only the distinct ones).

The product of its (nonzero) digits is 1097600, while the sum is 47.

The spelling of 220785072725 in words is "two hundred twenty billion, seven hundred eighty-five million, seventy-two thousand, seven hundred twenty-five".