64853274625 has 16 divisors (see below), whose sum is σ = 80943993936. Its totient is φ = 51878064000.

The previous prime is 64853274589. The next prime is 64853274671. The reversal of 64853274625 is 52647235846.

It can be written as a sum of positive squares in 8 ways, for example, as 11442366961 + 53410907664 = 106969^2 + 231108^2 .

It is not a de Polignac number, because 64853274625 - 2¹³ = 64853266433 is a prime.

It is a Duffinian 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, 2806117 + ... + 2829133.

It is an arithmetic number, because the mean of its divisors is an integer number (5058999621).

Almost surely, 2^64853274625 is an apocalyptic number.

It is an amenable number.

64853274625 is a deficient number, since it is larger than the sum of its proper divisors (16090719311).

64853274625 is a wasteful number, since it uses less digits than its factorization.

64853274625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45573 (or 45563 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 52.

The spelling of 64853274625 in words is "sixty-four billion, eight hundred fifty-three million, two hundred seventy-four thousand, six hundred twenty-five".