1000012225 has 6 divisors (see below), whose sum is σ = 1240015190. Its totient is φ = 800009760.

The previous prime is 1000012219. The next prime is 1000012231. The reversal of 1000012225 is 5222100001.

It is an interprime number because it is at equal distance from previous prime (1000012219) and next prime (1000012231).

It can be written as a sum of positive squares in 3 ways, for example, as 13549761 + 986462464 = 3681^2 + 31408^2 .

It is not a de Polignac number, because 1000012225 - 2³ = 1000012217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20000220 + ... + 20000269.

Almost surely, 2^1000012225 is an apocalyptic number.

It is an amenable number.

1000012225 is a deficient number, since it is larger than the sum of its proper divisors (240002965).

1000012225 is an equidigital number, since it uses as much as digits as its factorization.

1000012225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40000499 (or 40000494 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1000012225 is about 31622.9698953150. The cubic root of 1000012225 is about 1000.0040749834.

Adding to 1000012225 its reverse (5222100001), we get a palindrome (6222112226).

The spelling of 1000012225 in words is "one billion, twelve thousand, two hundred twenty-five".