1611715225 has 12 divisors (see below), whose sum is σ = 2085420096. Its totient is φ = 1233312080.

The previous prime is 1611715219. The next prime is 1611715241. The reversal of 1611715225 is 5225171161.

It is not a de Polignac number, because 1611715225 - 2¹¹ = 1611713177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1400917 + ... + 1402066.

It is an arithmetic number, because the mean of its divisors is an integer number (173785008).

Almost surely, 2^1611715225 is an apocalyptic number.

It is an amenable number.

1611715225 is a deficient number, since it is larger than the sum of its proper divisors (473704871).

1611715225 is a wasteful number, since it uses less digits than its factorization.

1611715225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803016 (or 2803011 counting only the distinct ones).

The product of its digits is 4200, while the sum is 31.

The square root of 1611715225 is about 40146.1732298360. The cubic root of 1611715225 is about 1172.4547834227.

Adding to 1611715225 its reverse (5225171161), we get a palindrome (6836886386).

The spelling of 1611715225 in words is "one billion, six hundred eleven million, seven hundred fifteen thousand, two hundred twenty-five".