23725649 has 2 divisors, whose sum is σ = 23725650. Its totient is φ = 23725648.

The previous prime is 23725643. The next prime is 23725711. The reversal of 23725649 is 94652732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15745024 + 7980625 = 3968^2 + 2825^2 .

It is a cyclic number.

It is not a de Polignac number, because 23725649 - 2¹⁶ = 23660113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23725643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11862824 + 11862825.

It is an arithmetic number, because the mean of its divisors is an integer number (11862825).

Almost surely, 2^23725649 is an apocalyptic number.

It is an amenable number.

23725649 is a deficient number, since it is larger than the sum of its proper divisors (1).

23725649 is an equidigital number, since it uses as much as digits as its factorization.

23725649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 23725649 is about 4870.8981717954. The cubic root of 23725649 is about 287.3465807790.

The spelling of 23725649 in words is "twenty-three million, seven hundred twenty-five thousand, six hundred forty-nine".