51270735725 has 48 divisors (see below), whose sum is σ = 73652518080. Its totient is φ = 35012275200.

The previous prime is 51270735701. The next prime is 51270735751. The reversal of 51270735725 is 52753707215.

It is not a de Polignac number, because 51270735725 - 2¹⁴ = 51270719341 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 547007 + ... + 633843.

It is an arithmetic number, because the mean of its divisors is an integer number (1534427460).

Almost surely, 2^51270735725 is an apocalyptic number.

51270735725 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51270735725 is a deficient number, since it is larger than the sum of its proper divisors (22381782355).

51270735725 is a wasteful number, since it uses less digits than its factorization.

51270735725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86990 (or 86985 counting only the distinct ones).

The product of its (nonzero) digits is 514500, while the sum is 44.

The spelling of 51270735725 in words is "fifty-one billion, two hundred seventy million, seven hundred thirty-five thousand, seven hundred twenty-five".