23507225 has 12 divisors (see below), whose sum is σ = 33313344. Its totient is φ = 16119120.

The previous prime is 23507221. The next prime is 23507233. The reversal of 23507225 is 52270532.

It is not a de Polignac number, because 23507225 - 2² = 23507221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23507194 and 23507203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23507221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66989 + ... + 67338.

It is an arithmetic number, because the mean of its divisors is an integer number (2776112).

Almost surely, 2^23507225 is an apocalyptic number.

23507225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23507225 is a deficient number, since it is larger than the sum of its proper divisors (9806119).

23507225 is a wasteful number, since it uses less digits than its factorization.

23507225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134344 (or 134339 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 23507225 is about 4848.4250019981. The cubic root of 23507225 is about 286.4620670661.

Adding to 23507225 its reverse (52270532), we get a palindrome (75777757).

It can be divided in two parts, 23507 and 225, that added together give a palindrome (23732).

The spelling of 23507225 in words is "twenty-three million, five hundred seven thousand, two hundred twenty-five".