2225468821 has 2 divisors, whose sum is σ = 2225468822. Its totient is φ = 2225468820.

The previous prime is 2225468797. The next prime is 2225468837. The reversal of 2225468821 is 1288645222.

2225468821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1701562500 + 523906321 = 41250^2 + 22889^2 .

It is a cyclic number.

It is not a de Polignac number, because 2225468821 - 2¹¹ = 2225466773 is a prime.

It is a super-2 number, since 2×2225468821² = 9905422946486260082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2225468621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112734410 + 1112734411.

It is an arithmetic number, because the mean of its divisors is an integer number (1112734411).

Almost surely, 2^2225468821 is an apocalyptic number.

It is an amenable number.

2225468821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2225468821 is an equidigital number, since it uses as much as digits as its factorization.

2225468821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122880, while the sum is 40.

The square root of 2225468821 is about 47174.8748911961. The cubic root of 2225468821 is about 1305.5910713834.

The spelling of 2225468821 in words is "two billion, two hundred twenty-five million, four hundred sixty-eight thousand, eight hundred twenty-one".