16092191025 has 45 divisors (see below), whose sum is σ = 29818878331. Its totient is φ = 8579457360.

The previous prime is 16092191023. The next prime is 16092191033. The reversal of 16092191025 is 52019129061.

The square root of 16092191025 is 126855.

It is a perfect power (a square), and thus also a powerful number.

16092191025 is a `hidden beast` number, since 1 + 609 + 2 + 19 + 10 + 25 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5793188769 + 10299002256 = 76113^2 + 101484^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 16092191025 - 2¹ = 16092191023 is a prime.

It is a super-2 number, since 2×16092191025² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16092191023) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 5707066 + ... + 5709884.

Almost surely, 2^16092191025 is an apocalyptic number.

16092191025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16092191025 is the 126855-th square number.

16092191025 is the 63428-th centered octagonal number.

It is an amenable number.

16092191025 is a deficient number, since it is larger than the sum of its proper divisors (13726687306).

16092191025 is an frugal number, since it uses more digits than its factorization.

16092191025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5660 (or 2827 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

Multiplying 16092191025 by its sum of digits (36), we get a square (579318876900 = 761130²).

The spelling of 16092191025 in words is "sixteen billion, ninety-two million, one hundred ninety-one thousand, twenty-five".