1226500275 has 288 divisors, whose sum is σ = 2978809344. Its totient is φ = 428544000.

The previous prime is 1226500259. The next prime is 1226500279. The reversal of 1226500275 is 5720056221.

1226500275 = 3953² + 3954² + ... + 4029².

It is not a de Polignac number, because 1226500275 - 2⁴ = 1226500259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226500279) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 39564510 + ... + 39564540.

It is an arithmetic number, because the mean of its divisors is an integer number (10343088).

Almost surely, 2^1226500275 is an apocalyptic number.

1226500275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1226500275 is an abundant number, since it is smaller than the sum of its proper divisors (1752309069).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1226500275 is a wasteful number, since it uses less digits than its factorization.

1226500275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 1226500275 is about 35021.4259418431. The cubic root of 1226500275 is about 1070.4241120150.

Adding to 1226500275 its reverse (5720056221), we get a palindrome (6946556496).

It can be divided in two parts, 1226 and 500275, that added together give a triangular number (501501 = T₁₀₀₁).

The spelling of 1226500275 in words is "one billion, two hundred twenty-six million, five hundred thousand, two hundred seventy-five".