52515143725820 has 24 divisors (see below), whose sum is σ = 110283151330800. Its totient is φ = 21005800441472.

The previous prime is 52515143725771. The next prime is 52515143725861. The reversal of 52515143725820 is 2852734151525.

It is a super-2 number, since 2×52515143725820² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14386010 + ... + 17663169.

It is an arithmetic number, because the mean of its divisors is an integer number (4595131305450).

Almost surely, 2^{52515143725820} is an apocalyptic number.

It is an amenable number.

52515143725820 is an abundant number, since it is smaller than the sum of its proper divisors (57768007604980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52515143725820 is a wasteful number, since it uses less digits than its factorization.

52515143725820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32131117 (or 32131115 counting only the distinct ones).

The product of its (nonzero) digits is 3360000, while the sum is 50.

The spelling of 52515143725820 in words is "fifty-two trillion, five hundred fifteen billion, one hundred forty-three million, seven hundred twenty-five thousand, eight hundred twenty".