51023535225 has 144 divisors (see below), whose sum is σ = 100715137152. Its totient is φ = 22610903040.

The previous prime is 51023535209. The next prime is 51023535253. The reversal of 51023535225 is 52253532015.

It is not a de Polignac number, because 51023535225 - 2⁴ = 51023535209 is a prime.

It is a super-2 number, since 2×51023535225² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 6476889 + ... + 6484761.

Almost surely, 2^51023535225 is an apocalyptic number.

It is an amenable number.

51023535225 is a deficient number, since it is larger than the sum of its proper divisors (49691601927).

51023535225 is a wasteful number, since it uses less digits than its factorization.

51023535225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7956 (or 7934 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 51023535225 in words is "fifty-one billion, twenty-three million, five hundred thirty-five thousand, two hundred twenty-five".