16661067525 has 48 divisors (see below), whose sum is σ = 31125835200. Its totient is φ = 8735273280.

The previous prime is 16661067523. The next prime is 16661067539. The reversal of 16661067525 is 52576016661.

16661067525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16661067525 - 2¹ = 16661067523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16661067523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 169354 + ... + 249003.

It is an arithmetic number, because the mean of its divisors is an integer number (648454900).

Almost surely, 2^16661067525 is an apocalyptic number.

16661067525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16661067525 is a deficient number, since it is larger than the sum of its proper divisors (14464767675).

16661067525 is a wasteful number, since it uses less digits than its factorization.

16661067525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418435 (or 418424 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 16661067525 in words is "sixteen billion, six hundred sixty-one million, sixty-seven thousand, five hundred twenty-five".