1225032928 has 36 divisors (see below), whose sum is σ = 2805547752. Its totient is φ = 525013440.

The previous prime is 1225032917. The next prime is 1225032931. The reversal of 1225032928 is 8292305221.

It is a junction number, because it is equal to n+sod(n) for n = 1225032893 and 1225032902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 389068 + ... + 392203.

It is an arithmetic number, because the mean of its divisors is an integer number (77931882).

Almost surely, 2^1225032928 is an apocalyptic number.

It is an amenable number.

1225032928 is an abundant number, since it is smaller than the sum of its proper divisors (1580514824).

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

1225032928 is an equidigital number, since it uses as much as digits as its factorization.

1225032928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781295 (or 781280 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1225032928 is about 35000.4703968390. The cubic root of 1225032928 is about 1069.9970675670.

The spelling of 1225032928 in words is "one billion, two hundred twenty-five million, thirty-two thousand, nine hundred twenty-eight".