23625551 has 2 divisors, whose sum is σ = 23625552. Its totient is φ = 23625550.

The previous prime is 23625527. The next prime is 23625557. The reversal of 23625551 is 15552632.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23625551 - 2⁶ = 23625487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23625557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11812775 + 11812776.

It is an arithmetic number, because the mean of its divisors is an integer number (11812776).

Almost surely, 2^23625551 is an apocalyptic number.

23625551 is a deficient number, since it is larger than the sum of its proper divisors (1).

23625551 is an equidigital number, since it uses as much as digits as its factorization.

23625551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 29.

The square root of 23625551 is about 4860.6122042393. The cubic root of 23625551 is about 286.9419081394.

The spelling of 23625551 in words is "twenty-three million, six hundred twenty-five thousand, five hundred fifty-one".