7869225 has 48 divisors (see below), whose sum is σ = 16026752. Its totient is φ = 3317760.

The previous prime is 7869221. The next prime is 7869227. The reversal of 7869225 is 5229687.

It is a happy number.

It is not a de Polignac number, because 7869225 - 2² = 7869221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a d-powerful number, because it can be written as 7⁸ + 8² + 6 + 9⁴ + 2⁴ + 2²¹ + 5⁴ .

It is not an unprimeable number, because it can be changed into a prime (7869221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6249 + ... + 7401.

Almost surely, 2^7869225 is an apocalyptic number.

7869225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7869225 is an abundant number, since it is smaller than the sum of its proper divisors (8157527).

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

7869225 is a wasteful number, since it uses less digits than its factorization.

7869225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1181 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 7869225 is about 2805.2138955880. The cubic root of 7869225 is about 198.9042155805.

It can be divided in two parts, 786 and 9225, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 7869225 in words is "seven million, eight hundred sixty-nine thousand, two hundred twenty-five".