23213125 has 20 divisors (see below), whose sum is σ = 31249372. Its totient is φ = 17136000.

The previous prime is 23213087. The next prime is 23213131. The reversal of 23213125 is 52131232.

It is a Cunningham number, because it is equal to 4818²+1.

It can be written as a sum of positive squares in 10 ways, for example, as 19775809 + 3437316 = 4447^2 + 1854^2 .

It is not a de Polignac number, because 23213125 - 2⁷ = 23212997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6697 + ... + 9553.

Almost surely, 2^23213125 is an apocalyptic number.

23213125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23213125 is a deficient number, since it is larger than the sum of its proper divisors (8036247).

23213125 is an equidigital number, since it uses as much as digits as its factorization.

23213125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890 (or 2875 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 23213125 is about 4818.0001037775. Note that the first 3 decimals coincide. The cubic root of 23213125 is about 285.2624032441.

Adding to 23213125 its reverse (52131232), we get a palindrome (75344357).

The spelling of 23213125 in words is "twenty-three million, two hundred thirteen thousand, one hundred twenty-five".