16536674025 has 27 divisors (see below), whose sum is σ = 29622475909. Its totient is φ = 8818530720.

The previous prime is 16536673949. The next prime is 16536674029. The reversal of 16536674025 is 52047663561.

The square root of 16536674025 is 128595.

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

16536674025 is a `hidden beast` number, since 16 + 536 + 67 + 40 + 2 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1660481001 + 14876193024 = 40749^2 + 121968^2 .

It is not a de Polignac number, because 16536674025 - 2⁹ = 16536673513 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16536674029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1924639 + ... + 1933211.

Almost surely, 2^16536674025 is an apocalyptic number.

16536674025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16536674025 is the 128595-th square number.

16536674025 is the 64298-th centered octagonal number.

It is an amenable number.

16536674025 is a deficient number, since it is larger than the sum of its proper divisors (13085801884).

16536674025 is an frugal number, since it uses more digits than its factorization.

16536674025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17162 (or 8581 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

It can be divided in two parts, 16536 and 674025, that added together give a square (690561 = 831²).

The spelling of 16536674025 in words is "sixteen billion, five hundred thirty-six million, six hundred seventy-four thousand, twenty-five".