1226258205 has 8 divisors (see below), whose sum is σ = 1962013152. Its totient is φ = 654004368.

The previous prime is 1226258197. The next prime is 1226258207. The reversal of 1226258205 is 5028526221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1226258205 - 2³ = 1226258197 is a prime.

It is a super-3 number, since 3×1226258205³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226258207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40875259 + ... + 40875288.

It is an arithmetic number, because the mean of its divisors is an integer number (245251644).

Almost surely, 2^1226258205 is an apocalyptic number.

1226258205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1226258205 is a deficient number, since it is larger than the sum of its proper divisors (735754947).

1226258205 is an equidigital number, since it uses as much as digits as its factorization.

1226258205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81750555.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 1226258205 is about 35017.9697441185. The cubic root of 1226258205 is about 1070.3536854473.

The spelling of 1226258205 in words is "one billion, two hundred twenty-six million, two hundred fifty-eight thousand, two hundred five".