3215725386 has 8 divisors (see below), whose sum is σ = 6431450784. Its totient is φ = 1071908460.

The previous prime is 3215725369. The next prime is 3215725391. The reversal of 3215725386 is 6835275123.

It is a happy number.

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

3215725386 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 3 ways as a sum of consecutive naturals, for example, 267977110 + ... + 267977121.

It is an arithmetic number, because the mean of its divisors is an integer number (803931348).

Almost surely, 2^3215725386 is an apocalyptic number.

3215725386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3215725386 is a wasteful number, since it uses less digits than its factorization.

3215725386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535954236.

The product of its digits is 302400, while the sum is 42.

The square root of 3215725386 is about 56707.3662410802. The cubic root of 3215725386 is about 1476.0225235435.

The spelling of 3215725386 in words is "three billion, two hundred fifteen million, seven hundred twenty-five thousand, three hundred eighty-six".