1670005025 has 12 divisors (see below), whose sum is σ = 2230099452. Its totient is φ = 1233234240.

The previous prime is 1670004997. The next prime is 1670005039. The reversal of 1670005025 is 5205000761.

It can be written as a sum of positive squares in 6 ways, for example, as 1364224 + 1668640801 = 1168^2 + 40849^2 .

It is not a de Polignac number, because 1670005025 - 2¹⁰ = 1670004001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1670004985 and 1670005003.

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, 2568914 + ... + 2569563.

It is an arithmetic number, because the mean of its divisors is an integer number (185841621).

Almost surely, 2^1670005025 is an apocalyptic number.

It is an amenable number.

1670005025 is a deficient number, since it is larger than the sum of its proper divisors (560094427).

1670005025 is a wasteful number, since it uses less digits than its factorization.

1670005025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5138500 (or 5138495 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 1670005025 is about 40865.6949653374. The cubic root of 1670005025 is about 1186.4221858405.

Adding to 1670005025 its reverse (5205000761), we get a palindrome (6875005786).

The spelling of 1670005025 in words is "one billion, six hundred seventy million, five thousand, twenty-five".