220265515 has 16 divisors (see below), whose sum is σ = 284051232. Its totient is φ = 163367424.

The previous prime is 220265491. The next prime is 220265519. The reversal of 220265515 is 515562022.

220265515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220265515 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220265519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13644 + ... + 25033.

It is an arithmetic number, because the mean of its divisors is an integer number (17753202).

Almost surely, 2^220265515 is an apocalyptic number.

220265515 is a deficient number, since it is larger than the sum of its proper divisors (63785717).

220265515 is a wasteful number, since it uses less digits than its factorization.

220265515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38766.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 220265515 is about 14841.3447840821. The cubic root of 220265515 is about 603.9238341964.

It can be divided in two parts, 220265 and 515, that added together give a triangular number (220780 = T₆₆₄).

The spelling of 220265515 in words is "two hundred twenty million, two hundred sixty-five thousand, five hundred fifteen".