1220225825 has 48 divisors (see below), whose sum is σ = 1867380480. Its totient is φ = 770238720.

The previous prime is 1220225807. The next prime is 1220225827. The reversal of 1220225825 is 5285220221.

1220225825 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1220225825 - 2¹⁰ = 1220224801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220225827) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1471511 + ... + 1472339.

It is an arithmetic number, because the mean of its divisors is an integer number (38903760).

Almost surely, 2^1220225825 is an apocalyptic number.

It is an amenable number.

1220225825 is a deficient number, since it is larger than the sum of its proper divisors (647154655).

1220225825 is a wasteful number, since it uses less digits than its factorization.

1220225825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 1220225825 is about 34931.7309190369. The cubic root of 1220225825 is about 1068.5956552416.

The spelling of 1220225825 in words is "one billion, two hundred twenty million, two hundred twenty-five thousand, eight hundred twenty-five".