3125000064 has 128 divisors (see below), whose sum is σ = 8792628480. Its totient is φ = 981319680.

The previous prime is 3124999979. The next prime is 3125000089. The reversal of 3125000064 is 4600005213.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 3125000064.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589104 + ... + 594384.

It is an arithmetic number, because the mean of its divisors is an integer number (68692410).

Almost surely, 2^3125000064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3125000064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4396314240).

3125000064 is an abundant number, since it is smaller than the sum of its proper divisors (5667628416).

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

3125000064 is a wasteful number, since it uses less digits than its factorization.

3125000064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5388 (or 5376 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 3125000064 is about 55901.7000099281. The cubic root of 3125000064 is about 1462.0088790871.

Adding to 3125000064 its reverse (4600005213), we get a palindrome (7725005277).

The spelling of 3125000064 in words is "three billion, one hundred twenty-five million, sixty-four", and thus it is an aban number.