23505825 has 24 divisors (see below), whose sum is σ = 44415808. Its totient is φ = 10745280.

The previous prime is 23505817. The next prime is 23505827. The reversal of 23505825 is 52850532.

23505825 = T₂₂₈₁ + T₂₂₈₂ + ... + T₂₂₈₉.

It is not a de Polignac number, because 23505825 - 2³ = 23505817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23505792 and 23505801.

It is not an unprimeable number, because it can be changed into a prime (23505827) 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 in 23 ways as a sum of consecutive naturals, for example, 21862 + ... + 22911.

Almost surely, 2^23505825 is an apocalyptic number.

23505825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23505825 is a deficient number, since it is larger than the sum of its proper divisors (20909983).

23505825 is a wasteful number, since it uses less digits than its factorization.

23505825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44793 (or 44788 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 23505825 is about 4848.2806230663. The cubic root of 23505825 is about 286.4563800932.

The spelling of 23505825 in words is "twenty-three million, five hundred five thousand, eight hundred twenty-five".