8778725 has 12 divisors (see below), whose sum is σ = 10936800. Its totient is φ = 6990000.

The previous prime is 8778719. The next prime is 8778727. The reversal of 8778725 is 5278778.

8778725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8778725 - 2¹⁸ = 8516581 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8778727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5576 + ... + 6974.

It is an arithmetic number, because the mean of its divisors is an integer number (911400).

Almost surely, 2^8778725 is an apocalyptic number.

It is an amenable number.

8778725 is a deficient number, since it is larger than the sum of its proper divisors (2158075).

8778725 is a wasteful number, since it uses less digits than its factorization.

8778725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660 (or 1655 counting only the distinct ones).

The product of its digits is 219520, while the sum is 44.

The square root of 8778725 is about 2962.8913243654. The cubic root of 8778725 is about 206.2895118669.

The spelling of 8778725 in words is "eight million, seven hundred seventy-eight thousand, seven hundred twenty-five".