64250589529 has 21 divisors (see below), whose sum is σ = 75060500277. Its totient is φ = 54997411644.

The previous prime is 64250589527. The next prime is 64250589569. The reversal of 64250589529 is 92598505246.

The square root of 64250589529 is 253477.

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

It is not a de Polignac number, because 64250589529 - 2¹ = 64250589527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64250589529.

It is not an unprimeable number, because it can be changed into a prime (64250589527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 86942242 + ... + 86942980.

It is an arithmetic number, because the mean of its divisors is an integer number (3574309537).

Almost surely, 2^64250589529 is an apocalyptic number.

64250589529 is the 253477-th square number.

64250589529 is the 126739-th centered octagonal number.

It is an amenable number.

64250589529 is a deficient number, since it is larger than the sum of its proper divisors (10809910748).

64250589529 is an frugal number, since it uses more digits than its factorization.

64250589529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 55.

The spelling of 64250589529 in words is "sixty-four billion, two hundred fifty million, five hundred eighty-nine thousand, five hundred twenty-nine".