1689501025 has 6 divisors (see below), whose sum is σ = 2094981302. Its totient is φ = 1351600800.

The previous prime is 1689501001. The next prime is 1689501059. The reversal of 1689501025 is 5201059861.

It can be written as a sum of positive squares in 3 ways, for example, as 95335696 + 1594165329 = 9764^2 + 39927^2 .

It is not a de Polignac number, because 1689501025 - 2²⁹ = 1152630113 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 (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33789996 + ... + 33790045.

Almost surely, 2^1689501025 is an apocalyptic number.

It is an amenable number.

1689501025 is a deficient number, since it is larger than the sum of its proper divisors (405480277).

1689501025 is an equidigital number, since it uses as much as digits as its factorization.

1689501025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67580051 (or 67580046 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 1689501025 is about 41103.5402976435. The cubic root of 1689501025 is about 1191.0211851966.

The spelling of 1689501025 in words is "one billion, six hundred eighty-nine million, five hundred one thousand, twenty-five".