868890825 has 144 divisors (see below), whose sum is σ = 1823829696. Its totient is φ = 390758400.

The previous prime is 868890823. The next prime is 868890857. The reversal of 868890825 is 528098868.

868890825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 868890825 - 2¹ = 868890823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (868890821) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4501929 + ... + 4502121.

It is an arithmetic number, because the mean of its divisors is an integer number (12665484).

Almost surely, 2^868890825 is an apocalyptic number.

868890825 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

868890825 is an abundant number, since it is smaller than the sum of its proper divisors (954938871).

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

868890825 is a wasteful number, since it uses less digits than its factorization.

868890825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The square root of 868890825 is about 29476.9541336957. The cubic root of 868890825 is about 954.2344037222.

The spelling of 868890825 in words is "eight hundred sixty-eight million, eight hundred ninety thousand, eight hundred twenty-five".