220725507 has 4 divisors (see below), whose sum is σ = 294300680. Its totient is φ = 147150336.

The previous prime is 220725481. The next prime is 220725517. The reversal of 220725507 is 705527022.

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

It is not a de Polignac number, because 220725507 - 2¹² = 220721411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220725517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36787582 + ... + 36787587.

It is an arithmetic number, because the mean of its divisors is an integer number (73575170).

Almost surely, 2^220725507 is an apocalyptic number.

220725507 is a deficient number, since it is larger than the sum of its proper divisors (73575173).

220725507 is an equidigital number, since it uses as much as digits as its factorization.

220725507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73575172.

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 220725507 is about 14856.8336801621. The cubic root of 220725507 is about 604.3439438005.

The spelling of 220725507 in words is "two hundred twenty million, seven hundred twenty-five thousand, five hundred seven".