1225533600 has 108 divisors (see below), whose sum is σ = 4321563246. Its totient is φ = 326807040.

The previous prime is 1225533577. The next prime is 1225533613. The reversal of 1225533600 is 63355221.

1225533600 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 53 + 3 + 600 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 647804304 + 577729296 = 25452^2 + 24036^2 .

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, 77907 + ... + 92306.

Almost surely, 2^1225533600 is an apocalyptic number.

1225533600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225533600 is an abundant number, since it is smaller than the sum of its proper divisors (3096029646).

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

1225533600 is a wasteful number, since it uses less digits than its factorization.

1225533600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170239 (or 170223 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 1225533600 is about 35007.6220272100. The cubic root of 1225533600 is about 1070.1428172834.

Adding to 1225533600 its reverse (63355221), we get a palindrome (1288888821).

The spelling of 1225533600 in words is "one billion, two hundred twenty-five million, five hundred thirty-three thousand, six hundred".