651539425285 has 48 divisors (see below), whose sum is σ = 926610304752. Its totient is φ = 438397747200.

The previous prime is 651539425283. The next prime is 651539425289. The reversal of 651539425285 is 582524935156.

It can be written as a sum of positive squares in 8 ways, for example, as 519659323876 + 131880101409 = 720874^2 + 363153^2 .

It is not a de Polignac number, because 651539425285 - 2¹ = 651539425283 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 (651539425283) 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, 6240069 + ... + 6343621.

It is an arithmetic number, because the mean of its divisors is an integer number (19304381349).

Almost surely, 2^651539425285 is an apocalyptic number.

It is an amenable number.

651539425285 is a deficient number, since it is larger than the sum of its proper divisors (275070879467).

651539425285 is a wasteful number, since it uses less digits than its factorization.

651539425285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104054 (or 104047 counting only the distinct ones).

The product of its digits is 12960000, while the sum is 55.

The spelling of 651539425285 in words is "six hundred fifty-one billion, five hundred thirty-nine million, four hundred twenty-five thousand, two hundred eighty-five".