64307250820725 has 72 divisors (see below), whose sum is σ = 116907394063968. Its totient is φ = 30933760636800.

The previous prime is 64307250820711. The next prime is 64307250820741. The reversal of 64307250820725 is 52702805270346.

It is not a de Polignac number, because 64307250820725 - 2⁸ = 64307250820469 is a prime.

It is a super-3 number, since 3×64307250820725³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10890027 + ... + 15722823.

It is an arithmetic number, because the mean of its divisors is an integer number (1623713806444).

Almost surely, 2^{64307250820725} is an apocalyptic number.

It is an amenable number.

64307250820725 is a deficient number, since it is larger than the sum of its proper divisors (52600143243243).

64307250820725 is a wasteful number, since it uses less digits than its factorization.

64307250820725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4833075 (or 4832943 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 51.

The spelling of 64307250820725 in words is "sixty-four trillion, three hundred seven billion, two hundred fifty million, eight hundred twenty thousand, seven hundred twenty-five".