2220504251 has 4 divisors (see below), whose sum is σ = 2537719152. Its totient is φ = 1903289352.

The previous prime is 2220504233. The next prime is 2220504257. The reversal of 2220504251 is 1524050222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1524050222 = 2 ⋅762025111.

It is a cyclic number.

It is not a de Polignac number, because 2220504251 - 2¹⁰ = 2220503227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220504257) 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, 158607440 + ... + 158607453.

It is an arithmetic number, because the mean of its divisors is an integer number (634429788).

Almost surely, 2^2220504251 is an apocalyptic number.

2220504251 is a deficient number, since it is larger than the sum of its proper divisors (317214901).

2220504251 is an equidigital number, since it uses as much as digits as its factorization.

2220504251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317214900.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 2220504251 is about 47122.2267194580. The cubic root of 2220504251 is about 1304.6195121968.

Adding to 2220504251 its reverse (1524050222), we get a palindrome (3744554473).

The spelling of 2220504251 in words is "two billion, two hundred twenty million, five hundred four thousand, two hundred fifty-one".