2225630729 has 4 divisors (see below), whose sum is σ = 2543577984. Its totient is φ = 1907683476.

The previous prime is 2225630663. The next prime is 2225630741. The reversal of 2225630729 is 9270365222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2225630729 - 2¹² = 2225626633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2225630692 and 2225630701.

It is not an unprimeable number, because it can be changed into a prime (2225630629) 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, 158973617 + ... + 158973630.

It is an arithmetic number, because the mean of its divisors is an integer number (635894496).

Almost surely, 2^2225630729 is an apocalyptic number.

It is an amenable number.

2225630729 is a deficient number, since it is larger than the sum of its proper divisors (317947255).

2225630729 is an equidigital number, since it uses as much as digits as its factorization.

2225630729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317947254.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 2225630729 is about 47176.5909005727. The cubic root of 2225630729 is about 1305.6227322049.

The spelling of 2225630729 in words is "two billion, two hundred twenty-five million, six hundred thirty thousand, seven hundred twenty-nine".