1690036025 has 6 divisors (see below), whose sum is σ = 2095644702. Its totient is φ = 1352028800.

The previous prime is 1690035983. The next prime is 1690036039. The reversal of 1690036025 is 5206300961.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8133904 + 1681902121 = 2852^2 + 41011^2 .

It is not a de Polignac number, because 1690036025 - 2³⁰ = 616294201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1690035982 and 1690036000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33800696 + ... + 33800745.

It is an arithmetic number, because the mean of its divisors is an integer number (349274117).

Almost surely, 2^1690036025 is an apocalyptic number.

It is an amenable number.

1690036025 is a deficient number, since it is larger than the sum of its proper divisors (405608677).

1690036025 is an equidigital number, since it uses as much as digits as its factorization.

1690036025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67601451 (or 67601446 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 1690036025 is about 41110.0477377490. The cubic root of 1690036025 is about 1191.1468887974.

Adding to 1690036025 its reverse (5206300961), we get a palindrome (6896336986).

It can be divided in two parts, 16900 and 36025, that added together give a palindrome (52925).

The spelling of 1690036025 in words is "one billion, six hundred ninety million, thirty-six thousand, twenty-five".