511212340525 has 12 divisors (see below), whose sum is σ = 634434691572. Its totient is φ = 408627040640.

The previous prime is 511212340481. The next prime is 511212340543. The reversal of 511212340525 is 525043212115.

It can be written as a sum of positive squares in 6 ways, for example, as 117462244 + 511094878281 = 10838^2 + 714909^2 .

It is not a de Polignac number, because 511212340525 - 2¹⁹ = 511211816237 is a prime.

It is a super-2 number, since 2×511212340525² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8540374 + ... + 8600023.

It is an arithmetic number, because the mean of its divisors is an integer number (52869557631).

Almost surely, 2^511212340525 is an apocalyptic number.

It is an amenable number.

511212340525 is a deficient number, since it is larger than the sum of its proper divisors (123222351047).

511212340525 is a wasteful number, since it uses less digits than its factorization.

511212340525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17141600 (or 17141595 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 511212340525 in words is "five hundred eleven billion, two hundred twelve million, three hundred forty thousand, five hundred twenty-five".