51100260625 has 20 divisors (see below), whose sum is σ = 65580723076. Its totient is φ = 39775320000.

The previous prime is 51100260613. The next prime is 51100260641. The reversal of 51100260625 is 52606200115.

It can be written as a sum of positive squares in 10 ways, for example, as 16204526209 + 34895734416 = 127297^2 + 186804^2 .

It is a de Polignac number, because none of the positive numbers 2^k-51100260625 is a prime.

It is a super-2 number, since 2×51100260625² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51100260593 and 51100260602.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1081746 + ... + 1127995.

Almost surely, 2^51100260625 is an apocalyptic number.

It is an amenable number.

51100260625 is a deficient number, since it is larger than the sum of its proper divisors (14480462451).

51100260625 is an equidigital number, since it uses as much as digits as its factorization.

51100260625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209798 (or 2209783 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 51100260625 in words is "fifty-one billion, one hundred million, two hundred sixty thousand, six hundred twenty-five".