675149805625 has 45 divisors (see below), whose sum is σ = 882560820603. Its totient is φ = 516274836000.

The previous prime is 675149805623. The next prime is 675149805637. The reversal of 675149805625 is 526508941576.

It is a happy number.

The square root of 675149805625 is 821675.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 674847463081 + 302342544 = 821491^2 + 17388^2 .

It is not a de Polignac number, because 675149805625 - 2¹ = 675149805623 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 675149805625.

It is not an unprimeable number, because it can be changed into a prime (675149805623) 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 44 ways as a sum of consecutive naturals, for example, 472462411 + ... + 472463839.

Almost surely, 2^675149805625 is an apocalyptic number.

675149805625 is the 821675-th square number.

675149805625 is the 410838-th centered octagonal number.

It is an amenable number.

675149805625 is a deficient number, since it is larger than the sum of its proper divisors (207411014978).

675149805625 is an frugal number, since it uses more digits than its factorization.

675149805625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924 (or 1457 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 58.

The spelling of 675149805625 in words is "six hundred seventy-five billion, one hundred forty-nine million, eight hundred five thousand, six hundred twenty-five".