23725549 has 2 divisors, whose sum is σ = 23725550. Its totient is φ = 23725548.

The previous prime is 23725519. The next prime is 23725561. The reversal of 23725549 is 94552732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23716900 + 8649 = 4870^2 + 93^2 .

It is a cyclic number.

It is not a de Polignac number, because 23725549 - 2¹³ = 23717357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23725519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11862774 + 11862775.

It is an arithmetic number, because the mean of its divisors is an integer number (11862775).

Almost surely, 2^23725549 is an apocalyptic number.

It is an amenable number.

23725549 is a deficient number, since it is larger than the sum of its proper divisors (1).

23725549 is an equidigital number, since it uses as much as digits as its factorization.

23725549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 37.

The square root of 23725549 is about 4870.8879067373. The cubic root of 23725549 is about 287.3461770711.

It can be divided in two parts, 2372 and 5549, that added together give a square (7921 = 89²).

The spelling of 23725549 in words is "twenty-three million, seven hundred twenty-five thousand, five hundred forty-nine".