23686374928225 has 9 divisors (see below), whose sum is σ = 29371135085593. Its totient is φ = 18949080475120.

The previous prime is 23686374928169. The next prime is 23686374928277. The reversal of 23686374928225 is 52282947368632.

The square root of 23686374928225 is 4866865.

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

It can be written as a sum of positive squares in 4 ways, for example, as 5645152658209 + 18041222270016 = 2375953^2 + 4247496^2 .

It is a de Polignac number, because none of the positive numbers 2^k-23686374928225 is a prime.

It is a super-2 number, since 2×23686374928225² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 23847639 + ... + 24821011.

Almost surely, 2^{23686374928225} is an apocalyptic number.

23686374928225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23686374928225 is the 4866865-th square number.

23686374928225 is the 2433433-rd centered octagonal number.

It is an amenable number.

23686374928225 is a deficient number, since it is larger than the sum of its proper divisors (5684760157368).

23686374928225 is an frugal number, since it uses more digits than its factorization.

23686374928225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946756 (or 973378 counting only the distinct ones).

The product of its digits is 418037760, while the sum is 67.

The spelling of 23686374928225 in words is "twenty-three trillion, six hundred eighty-six billion, three hundred seventy-four million, nine hundred twenty-eight thousand, two hundred twenty-five".