1226716225 has 18 divisors (see below), whose sum is σ = 1769477334. Its totient is φ = 841176000.

The previous prime is 1226716219. The next prime is 1226716237. The reversal of 1226716225 is 5226176221.

It can be written as a sum of positive squares in 3 ways, for example, as 5143824 + 1221572401 = 2268^2 + 34951^2 .

It is not a de Polignac number, because 1226716225 - 2¹⁹ = 1226191937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 499476 + ... + 501925.

Almost surely, 2^1226716225 is an apocalyptic number.

It is an amenable number.

1226716225 is a deficient number, since it is larger than the sum of its proper divisors (542761109).

1226716225 is a wasteful number, since it uses less digits than its factorization.

1226716225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001425 (or 1001413 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 1226716225 is about 35024.5089187557. The cubic root of 1226716225 is about 1070.4869315475.

The spelling of 1226716225 in words is "one billion, two hundred twenty-six million, seven hundred sixteen thousand, two hundred twenty-five".