23009725 has 12 divisors (see below), whose sum is σ = 28658880. Its totient is φ = 18326000.

The previous prime is 23009713. The next prime is 23009747. The reversal of 23009725 is 52790032.

It is not a de Polignac number, because 23009725 - 2⁹ = 23009213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23009693 and 23009702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4050 + ... + 7900.

It is an arithmetic number, because the mean of its divisors is an integer number (2388240).

Almost surely, 2^23009725 is an apocalyptic number.

23009725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23009725 is a deficient number, since it is larger than the sum of its proper divisors (5649155).

23009725 is a wasteful number, since it uses less digits than its factorization.

23009725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100 (or 4095 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 23009725 is about 4796.8453174977. The cubic root of 23009725 is about 284.4267743755.

Adding to 23009725 its reverse (52790032), we get a palindrome (75799757).

The spelling of 23009725 in words is "twenty-three million, nine thousand, seven hundred twenty-five".