12523407 has 24 divisors (see below), whose sum is σ = 19157904. Its totient is φ = 7248384.

The previous prime is 12523393. The next prime is 12523417. The reversal of 12523407 is 70432521.

It is not a de Polignac number, because 12523407 - 2⁴ = 12523391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12523417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7893 + ... + 9345.

It is an arithmetic number, because the mean of its divisors is an integer number (798246).

Almost surely, 2^12523407 is an apocalyptic number.

12523407 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12523407 is a deficient number, since it is larger than the sum of its proper divisors (6634497).

12523407 is a wasteful number, since it uses less digits than its factorization.

12523407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499 (or 1486 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 12523407 is about 3538.8426074071. The cubic root of 12523407 is about 232.2242122475.

Adding to 12523407 its reverse (70432521), we get a palindrome (82955928).

It can be divided in two parts, 125 and 23407, that added together give a palindrome (23532).

The spelling of 12523407 in words is "twelve million, five hundred twenty-three thousand, four hundred seven".