16525012271 has 4 divisors (see below), whose sum is σ = 16525467000. Its totient is φ = 16524557544.

The previous prime is 16525012237. The next prime is 16525012349. The reversal of 16525012271 is 17221052561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17221052561 = 37 ⋅465433853.

It is a cyclic number.

It is not a de Polignac number, because 16525012271 - 2¹⁸ = 16524750127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16525012171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167621 + ... + 247278.

It is an arithmetic number, because the mean of its divisors is an integer number (4131366750).

Almost surely, 2^16525012271 is an apocalyptic number.

16525012271 is a deficient number, since it is larger than the sum of its proper divisors (454729).

16525012271 is an equidigital number, since it uses as much as digits as its factorization.

16525012271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454728.

The product of its (nonzero) digits is 8400, while the sum is 32.

The spelling of 16525012271 in words is "sixteen billion, five hundred twenty-five million, twelve thousand, two hundred seventy-one".