51512250525 has 12 divisors (see below), whose sum is σ = 85166920992. Its totient is φ = 27473200240.

The previous prime is 51512250523. The next prime is 51512250527. The reversal of 51512250525 is 52505221515.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51512250523) and next prime (51512250527).

It is not a de Polignac number, because 51512250525 - 2¹ = 51512250523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51512250523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343414929 + ... + 343415078.

It is an arithmetic number, because the mean of its divisors is an integer number (7097243416).

Almost surely, 2^51512250525 is an apocalyptic number.

It is an amenable number.

51512250525 is a deficient number, since it is larger than the sum of its proper divisors (33654670467).

51512250525 is a wasteful number, since it uses less digits than its factorization.

51512250525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686830020 (or 686830015 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 33.

The spelling of 51512250525 in words is "fifty-one billion, five hundred twelve million, two hundred fifty thousand, five hundred twenty-five".