2455212220 has 24 divisors (see below), whose sum is σ = 5156885664. Its totient is φ = 981905856.

The previous prime is 2455212217. The next prime is 2455212223. The reversal of 2455212220 is 222125542.

It is an interprime number because it is at equal distance from previous prime (2455212217) and next prime (2455212223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2455212223) 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, 186082 + ... + 198838.

It is an arithmetic number, because the mean of its divisors is an integer number (214870236).

Almost surely, 2^2455212220 is an apocalyptic number.

2455212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2455212220 is an abundant number, since it is smaller than the sum of its proper divisors (2701673444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2455212220 is a wasteful number, since it uses less digits than its factorization.

2455212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22389 (or 22387 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2455212220 is about 49550.0980826476. The cubic root of 2455212220 is about 1349.0550717223.

Adding to 2455212220 its reverse (222125542), we get a palindrome (2677337762).

The spelling of 2455212220 in words is "two billion, four hundred fifty-five million, two hundred twelve thousand, two hundred twenty".