7800025 has 12 divisors (see below), whose sum is σ = 10241532. Its totient is φ = 5872640.

The previous prime is 7800017. The next prime is 7800029. The reversal of 7800025 is 5200087.

It can be written as a sum of positive squares in 6 ways, for example, as 719104 + 7080921 = 848^2 + 2661^2 .

It is not a de Polignac number, because 7800025 - 2³ = 7800017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7799969 and 7800005.

It is not an unprimeable number, because it can be changed into a prime (7800029) 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, 8752 + ... + 9601.

It is an arithmetic number, because the mean of its divisors is an integer number (853461).

Almost surely, 2^7800025 is an apocalyptic number.

It is an amenable number.

7800025 is a deficient number, since it is larger than the sum of its proper divisors (2441507).

7800025 is a wasteful number, since it uses less digits than its factorization.

7800025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18380 (or 18375 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 7800025 is about 2792.8524844682. The cubic root of 7800025 is about 198.3194601474.

The spelling of 7800025 in words is "seven million, eight hundred thousand, twenty-five".