220725947 has 8 divisors (see below), whose sum is σ = 238755216. Its totient is φ = 202846752.

The previous prime is 220725941. The next prime is 220725949. The reversal of 220725947 is 749527022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220725947 - 2⁸ = 220725691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220725947.

It is not an unprimeable number, because it can be changed into a prime (220725941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34448 + ... + 40349.

It is an arithmetic number, because the mean of its divisors is an integer number (29844402).

Almost surely, 2^220725947 is an apocalyptic number.

220725947 is a deficient number, since it is larger than the sum of its proper divisors (18029269).

220725947 is a wasteful number, since it uses less digits than its factorization.

220725947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75037.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 220725947 is about 14856.8484881552. The cubic root of 220725947 is about 604.3443453719.

The spelling of 220725947 in words is "two hundred twenty million, seven hundred twenty-five thousand, nine hundred forty-seven".