23308025 has 24 divisors (see below), whose sum is σ = 32211480. Its totient is φ = 16611840.

The previous prime is 23308013. The next prime is 23308067. The reversal of 23308025 is 52080332.

23308025 = T₁₃₅₃ + T₁₃₅₄ + ... + T₁₃₇₇.

It can be written as a sum of positive squares in 12 ways, for example, as 7203856 + 16104169 = 2684^2 + 4013^2 .

It is not a de Polignac number, because 23308025 - 2⁶ = 23307961 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8189 + ... + 10661.

It is an arithmetic number, because the mean of its divisors is an integer number (1342145).

Almost surely, 2^23308025 is an apocalyptic number.

23308025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23308025 is a deficient number, since it is larger than the sum of its proper divisors (8903455).

23308025 is a wasteful number, since it uses less digits than its factorization.

23308025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525 (or 2520 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23308025 is about 4827.8385432821. The cubic root of 23308025 is about 285.6506117036.

Adding to 23308025 its reverse (52080332), we get a palindrome (75388357).

The spelling of 23308025 in words is "twenty-three million, three hundred eight thousand, twenty-five".