1225536928 has 96 divisors (see below), whose sum is σ = 3018798720. Its totient is φ = 475791360.

The previous prime is 1225536913. The next prime is 1225536941. The reversal of 1225536928 is 8296355221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 869088 + ... + 870496.

It is an arithmetic number, because the mean of its divisors is an integer number (31445820).

Almost surely, 2^1225536928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225536928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1509399360).

1225536928 is an abundant number, since it is smaller than the sum of its proper divisors (1793261792).

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

1225536928 is a wasteful number, since it uses less digits than its factorization.

1225536928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790 (or 1782 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 1225536928 is about 35007.6695596836. The cubic root of 1225536928 is about 1070.1437859587.

The spelling of 1225536928 in words is "one billion, two hundred twenty-five million, five hundred thirty-six thousand, nine hundred twenty-eight".