7865225687 has 16 divisors (see below), whose sum is σ = 8645158944. Its totient is φ = 7096320000.

The previous prime is 7865225681. The next prime is 7865225713.

It is a happy number.

7865225687 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7865225687 - 2¹² = 7865221591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7865225681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 789437 + ... + 799337.

It is an arithmetic number, because the mean of its divisors is an integer number (540322434).

Almost surely, 2^7865225687 is an apocalyptic number.

7865225687 is a deficient number, since it is larger than the sum of its proper divisors (779933257).

7865225687 is a wasteful number, since it uses less digits than its factorization.

7865225687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10450.

The product of its digits is 11289600, while the sum is 56.

The square root of 7865225687 is about 88686.1076324810. The cubic root of 7865225687 is about 1988.7051404007.

The spelling of 7865225687 in words is "seven billion, eight hundred sixty-five million, two hundred twenty-five thousand, six hundred eighty-seven".