23125309 has 2 divisors, whose sum is σ = 23125310. Its totient is φ = 23125308.

The previous prime is 23125301. The next prime is 23125313. The reversal of 23125309 is 90352132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13853284 + 9272025 = 3722^2 + 3045^2 .

It is a cyclic number.

It is not a de Polignac number, because 23125309 - 2³ = 23125301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23125301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11562654 + 11562655.

It is an arithmetic number, because the mean of its divisors is an integer number (11562655).

Almost surely, 2^23125309 is an apocalyptic number.

It is an amenable number.

23125309 is a deficient number, since it is larger than the sum of its proper divisors (1).

23125309 is an equidigital number, since it uses as much as digits as its factorization.

23125309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 23125309 is about 4808.8781436006. The cubic root of 23125309 is about 284.9022297239.

The spelling of 23125309 in words is "twenty-three million, one hundred twenty-five thousand, three hundred nine".