1225282628 has 12 divisors (see below), whose sum is σ = 2145357312. Its totient is φ = 612323400.

The previous prime is 1225282613. The next prime is 1225282649. The reversal of 1225282628 is 8262825221.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1225282591 and 1225282600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70700 + ... + 86307.

It is an arithmetic number, because the mean of its divisors is an integer number (178779776).

Almost surely, 2^1225282628 is an apocalyptic number.

It is an amenable number.

1225282628 is a deficient number, since it is larger than the sum of its proper divisors (920074684).

1225282628 is a wasteful number, since it uses less digits than its factorization.

1225282628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158962 (or 158960 counting only the distinct ones).

The product of its digits is 61440, while the sum is 38.

The square root of 1225282628 is about 35004.0373100018. The cubic root of 1225282628 is about 1070.0697622434.

The spelling of 1225282628 in words is "one billion, two hundred twenty-five million, two hundred eighty-two thousand, six hundred twenty-eight".