1225151756 has 24 divisors (see below), whose sum is σ = 2185278480. Its totient is φ = 600833600.

The previous prime is 1225151723. The next prime is 1225151771. The reversal of 1225151756 is 6571515221.

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 7 ways as a sum of consecutive naturals, for example, 103166 + ... + 114426.

It is an arithmetic number, because the mean of its divisors is an integer number (91053270).

Almost surely, 2^1225151756 is an apocalyptic number.

It is an amenable number.

1225151756 is a deficient number, since it is larger than the sum of its proper divisors (960126724).

1225151756 is a wasteful number, since it uses less digits than its factorization.

1225151756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11785 (or 11783 counting only the distinct ones).

The product of its digits is 21000, while the sum is 35.

The square root of 1225151756 is about 35002.1678757188. The cubic root of 1225151756 is about 1070.0316629638.

Adding to 1225151756 its reverse (6571515221), we get a palindrome (7796666977).

The spelling of 1225151756 in words is "one billion, two hundred twenty-five million, one hundred fifty-one thousand, seven hundred fifty-six".