16525501061 has 2 divisors, whose sum is σ = 16525501062. Its totient is φ = 16525501060.

The previous prime is 16525501037. The next prime is 16525501063. The reversal of 16525501061 is 16010552561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16489128100 + 36372961 = 128410^2 + 6031^2 .

It is a cyclic number.

It is not a de Polignac number, because 16525501061 - 2⁶ = 16525500997 is a prime.

It is a super-2 number, since 2×16525501061² (a number of 21 digits) contains 22 as substring.

Together with 16525501063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16525501063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8262750530 + 8262750531.

It is an arithmetic number, because the mean of its divisors is an integer number (8262750531).

Almost surely, 2^16525501061 is an apocalyptic number.

It is an amenable number.

16525501061 is a deficient number, since it is larger than the sum of its proper divisors (1).

16525501061 is an equidigital number, since it uses as much as digits as its factorization.

16525501061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 16525501061 in words is "sixteen billion, five hundred twenty-five million, five hundred one thousand, sixty-one".