51504340525 has 12 divisors (see below), whose sum is σ = 69671326464. Its totient is φ = 37457702000.

The previous prime is 51504340499. The next prime is 51504340529. The reversal of 51504340525 is 52504340515.

It is not a de Polignac number, because 51504340525 - 2⁵ = 51504340493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51504340529) 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, 93643981 + ... + 93644530.

It is an arithmetic number, because the mean of its divisors is an integer number (5805943872).

Almost surely, 2^51504340525 is an apocalyptic number.

51504340525 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51504340525 is a deficient number, since it is larger than the sum of its proper divisors (18166985939).

51504340525 is a wasteful number, since it uses less digits than its factorization.

51504340525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187288532 (or 187288527 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 51504340525 in words is "fifty-one billion, five hundred four million, three hundred forty thousand, five hundred twenty-five".