16525057536 has 480 divisors, whose sum is σ = 56490321888. Its totient is φ = 4777574400.

The previous prime is 16525057529. The next prime is 16525057537. The reversal of 16525057536 is 63575052561.

16525057536 is a `hidden beast` number, since 1 + 65 + 2 + 5 + 0 + 57 + 536 = 666.

It is a super-2 number, since 2×16525057536² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16525057491 and 16525057500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16525057537) 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, 27495636 + ... + 27496236.

Almost surely, 2^16525057536 is an apocalyptic number.

16525057536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16525057536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28245160944).

16525057536 is an abundant number, since it is smaller than the sum of its proper divisors (39965264352).

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

16525057536 is an equidigital number, since it uses as much as digits as its factorization.

16525057536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 945000, while the sum is 45.

The spelling of 16525057536 in words is "sixteen billion, five hundred twenty-five million, fifty-seven thousand, five hundred thirty-six".