2865217725 has 24 divisors (see below), whose sum is σ = 5263512320. Its totient is φ = 1528115760.

The previous prime is 2865217697. The next prime is 2865217781. The reversal of 2865217725 is 5277125682.

It is not a de Polignac number, because 2865217725 - 2¹⁴ = 2865201341 is a prime.

It is a super-2 number, since 2×2865217725² = 16418945223308351250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2121709 + ... + 2123058.

Almost surely, 2^2865217725 is an apocalyptic number.

2865217725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2865217725 is a deficient number, since it is larger than the sum of its proper divisors (2398294595).

2865217725 is a wasteful number, since it uses less digits than its factorization.

2865217725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244786 (or 4244775 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 2865217725 is about 53527.7285619332. The cubic root of 2865217725 is about 1420.3189333543.

The spelling of 2865217725 in words is "two billion, eight hundred sixty-five million, two hundred seventeen thousand, seven hundred twenty-five".