52525115640 has 192 divisors, whose sum is σ = 182944008000. Its totient is φ = 13035534336.

The previous prime is 52525115557. The next prime is 52525115641. The reversal of 52525115640 is 4651152525.

52525115640 is a `hidden beast` number, since 5 + 2 + 5 + 2 + 5 + 1 + 1 + 5 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52525115595 and 52525115604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52525115641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 220636 + ... + 392084.

It is an arithmetic number, because the mean of its divisors is an integer number (952833375).

Almost surely, 2^52525115640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52525115640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91472004000).

52525115640 is an abundant number, since it is smaller than the sum of its proper divisors (130418892360).

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

52525115640 is a wasteful number, since it uses less digits than its factorization.

52525115640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171526 (or 171519 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 52525115640 in words is "fifty-two billion, five hundred twenty-five million, one hundred fifteen thousand, six hundred forty".