1225904576 has 28 divisors (see below), whose sum is σ = 2619783432. Its totient is φ = 565801728.

The previous prime is 1225904573. The next prime is 1225904593. The reversal of 1225904576 is 6754095221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225904573) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 735890 + ... + 737553.

It is an arithmetic number, because the mean of its divisors is an integer number (93563694).

Almost surely, 2^1225904576 is an apocalyptic number.

1225904576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1225904576 is an abundant number, since it is smaller than the sum of its proper divisors (1393878856).

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

1225904576 is a wasteful number, since it uses less digits than its factorization.

1225904576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473468 (or 1473458 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 1225904576 is about 35012.9201295750. The cubic root of 1225904576 is about 1070.2507858317.

Adding to 1225904576 its reverse (6754095221), we get a palindrome (7979999797).

The spelling of 1225904576 in words is "one billion, two hundred twenty-five million, nine hundred four thousand, five hundred seventy-six".