7868025 has 81 divisors (see below), whose sum is σ = 16454893. Its totient is φ = 3590400.

The previous prime is 7867999. The next prime is 7868027. The reversal of 7868025 is 5208687.

The square root of 7868025 is 2805.

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

7868025 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 184041 + 7683984 = 429^2 + 2772^2 .

It is not a de Polignac number, because 7868025 - 2⁷ = 7867897 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7868027) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 462817 + ... + 462833.

Almost surely, 2^7868025 is an apocalyptic number.

7868025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7868025 is the 2805-th square number.

7868025 is the 1403-rd centered octagonal number.

It is an amenable number.

7868025 is an abundant number, since it is smaller than the sum of its proper divisors (8586868).

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

7868025 is a wasteful number, since it uses less digits than its factorization.

7868025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The cubic root of 7868025 is about 198.8941045809.

Multiplying 7868025 by its sum of digits (36), we get a square (283248900 = 16830²).

The spelling of 7868025 in words is "seven million, eight hundred sixty-eight thousand, twenty-five".