2237221625 has 8 divisors (see below), whose sum is σ = 2792052744. Its totient is φ = 1789777200.

The previous prime is 2237221603. The next prime is 2237221631. The reversal of 2237221625 is 5261227322.

2237221625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 423824569 + 1813397056 = 20587^2 + 42584^2 .

It is not a de Polignac number, because 2237221625 - 2¹⁸ = 2236959481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2237221591 and 2237221600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8948762 + ... + 8949011.

It is an arithmetic number, because the mean of its divisors is an integer number (349006593).

Almost surely, 2^2237221625 is an apocalyptic number.

2237221625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2237221625 is a deficient number, since it is larger than the sum of its proper divisors (554831119).

2237221625 is an equidigital number, since it uses as much as digits as its factorization.

2237221625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17897788 (or 17897778 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 2237221625 is about 47299.2772143507. The cubic root of 2237221625 is about 1307.8853330650.

Adding to 2237221625 its reverse (5261227322), we get a palindrome (7498448947).

The spelling of 2237221625 in words is "two billion, two hundred thirty-seven million, two hundred twenty-one thousand, six hundred twenty-five".