651284821131825 has 12 divisors (see below), whose sum is σ = 1076790904271408. Its totient is φ = 347351904603600.

The previous prime is 651284821131823. The next prime is 651284821131827. The reversal of 651284821131825 is 528131128482156.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (651284821131823) and next prime (651284821131827).

It is not a de Polignac number, because 651284821131825 - 2¹ = 651284821131823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (651284821131821) 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, 4341898807471 + ... + 4341898807620.

Almost surely, 2^{651284821131825} is an apocalyptic number.

It is an amenable number.

651284821131825 is a deficient number, since it is larger than the sum of its proper divisors (425506083139583).

651284821131825 is a wasteful number, since it uses less digits than its factorization.

651284821131825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8683797615104 (or 8683797615099 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 57.

The spelling of 651284821131825 in words is "six hundred fifty-one trillion, two hundred eighty-four billion, eight hundred twenty-one million, one hundred thirty-one thousand, eight hundred twenty-five".