868564125 has 96 divisors (see below), whose sum is σ = 1839801600. Its totient is φ = 388656000.

The previous prime is 868564121. The next prime is 868564129. The reversal of 868564125 is 521465868.

868564125 is a `hidden beast` number, since 8 + 68 + 564 + 1 + 25 = 666.

It is an interprime number because it is at equal distance from previous prime (868564121) and next prime (868564129).

It is not a de Polignac number, because 868564125 - 2² = 868564121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868564121) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 158176 + ... + 163574.

It is an arithmetic number, because the mean of its divisors is an integer number (19164600).

Almost surely, 2^868564125 is an apocalyptic number.

It is an amenable number.

868564125 is an abundant number, since it is smaller than the sum of its proper divisors (971237475).

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

868564125 is a wasteful number, since it uses less digits than its factorization.

868564125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5444 (or 5431 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 868564125 is about 29471.4119953558. The cubic root of 868564125 is about 954.1147924312.

The spelling of 868564125 in words is "eight hundred sixty-eight million, five hundred sixty-four thousand, one hundred twenty-five".