2245252421 has 4 divisors (see below), whose sum is σ = 2245352844. Its totient is φ = 2245152000.

The previous prime is 2245252417. The next prime is 2245252423. The reversal of 2245252421 is 1242525422.

It is a happy number.

2245252421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 119028100 + 2126224321 = 10910^2 + 46111^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245252421 - 2² = 2245252417 is a prime.

It is a super-2 number, since 2×2245252421² = 10082316868012722482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2245252423) 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, 191 + ... + 67011.

It is an arithmetic number, because the mean of its divisors is an integer number (561338211).

Almost surely, 2^2245252421 is an apocalyptic number.

It is an amenable number.

2245252421 is a deficient number, since it is larger than the sum of its proper divisors (100423).

2245252421 is an equidigital number, since it uses as much as digits as its factorization.

2245252421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100422.

The product of its digits is 12800, while the sum is 29.

The square root of 2245252421 is about 47384.0945993484. The cubic root of 2245252421 is about 1309.4484053842.

Adding to 2245252421 its reverse (1242525422), we get a palindrome (3487777843).

The spelling of 2245252421 in words is "two billion, two hundred forty-five million, two hundred fifty-two thousand, four hundred twenty-one".