1611442025 has 6 divisors (see below), whose sum is σ = 1998188142. Its totient is φ = 1289153600.

The previous prime is 1611442013. The next prime is 1611442033. The reversal of 1611442025 is 5202441161.

It can be written as a sum of positive squares in 3 ways, for example, as 474673369 + 1136768656 = 21787^2 + 33716^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1611442025 is a prime.

It is a super-2 number, since 2×1611442025² = 5193490799872201250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1611441985 and 1611442003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32228816 + ... + 32228865.

It is an arithmetic number, because the mean of its divisors is an integer number (333031357).

Almost surely, 2^1611442025 is an apocalyptic number.

It is an amenable number.

1611442025 is a deficient number, since it is larger than the sum of its proper divisors (386746117).

1611442025 is an equidigital number, since it uses as much as digits as its factorization.

1611442025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64457691 (or 64457686 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1611442025 is about 40142.7705197337. The cubic root of 1611442025 is about 1172.3885325238.

Adding to 1611442025 its reverse (5202441161), we get a palindrome (6813883186).

The spelling of 1611442025 in words is "one billion, six hundred eleven million, four hundred forty-two thousand, twenty-five".