3685125509 has 8 divisors (see below), whose sum is σ = 3993876600. Its totient is φ = 3379985856.

The previous prime is 3685125503. The next prime is 3685125517. The reversal of 3685125509 is 9055215863.

It can be written as a sum of positive squares in 4 ways, for example, as 42640900 + 3642484609 = 6530^2 + 60353^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3685125509 - 2²⁰ = 3684076933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3685125509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685125503) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 900734 + ... + 904815.

It is an arithmetic number, because the mean of its divisors is an integer number (499234575).

Almost surely, 2^3685125509 is an apocalyptic number.

It is an amenable number.

3685125509 is a deficient number, since it is larger than the sum of its proper divisors (308751091).

3685125509 is a wasteful number, since it uses less digits than its factorization.

3685125509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805719.

The product of its (nonzero) digits is 324000, while the sum is 44.

The square root of 3685125509 is about 60705.2346095458. The cubic root of 3685125509 is about 1544.6049700326.

The spelling of 3685125509 in words is "three billion, six hundred eighty-five million, one hundred twenty-five thousand, five hundred nine".