51505075116025 has 6 divisors (see below), whose sum is σ = 63866293143902. Its totient is φ = 41204060092800.

The previous prime is 51505075115941. The next prime is 51505075116029. The reversal of 51505075116025 is 52061157050515.

It can be written as a sum of positive squares in 3 ways, for example, as 2723608912896 + 48781466203129 = 1650336^2 + 6984373^2 .

It is not a de Polignac number, because 51505075116025 - 2¹³ = 51505075107833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51505075116029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1030101502296 + ... + 1030101502345.

Almost surely, 2^{51505075116025} is an apocalyptic number.

It is an amenable number.

51505075116025 is a deficient number, since it is larger than the sum of its proper divisors (12361218027877).

51505075116025 is a wasteful number, since it uses less digits than its factorization.

51505075116025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060203004651 (or 2060203004646 counting only the distinct ones).

The product of its (nonzero) digits is 262500, while the sum is 43.

The spelling of 51505075116025 in words is "fifty-one trillion, five hundred five billion, seventy-five million, one hundred sixteen thousand, twenty-five".