1225522017 has 12 divisors (see below), whose sum is σ = 1776243924. Its totient is φ = 814224480.

The previous prime is 1225522009. The next prime is 1225522019. The reversal of 1225522017 is 7102255221.

1225522017 is a `hidden beast` number, since 122 + 5 + 522 + 0 + 17 = 666.

1225522017 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 595311201 + 630210816 = 24399^2 + 25104^2 .

It is not a de Polignac number, because 1225522017 - 2³ = 1225522009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225522019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229734 + ... + 235007.

It is an arithmetic number, because the mean of its divisors is an integer number (148020327).

Almost surely, 2^1225522017 is an apocalyptic number.

It is an amenable number.

1225522017 is a deficient number, since it is larger than the sum of its proper divisors (550721907).

1225522017 is a wasteful number, since it uses less digits than its factorization.

1225522017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465040 (or 465037 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 1225522017 is about 35007.4565914178. The cubic root of 1225522017 is about 1070.1394458260.

Adding to 1225522017 its reverse (7102255221), we get a palindrome (8327777238).

The spelling of 1225522017 in words is "one billion, two hundred twenty-five million, five hundred twenty-two thousand, seventeen".