12125507 has 4 divisors (see below), whose sum is σ = 12152160. Its totient is φ = 12098856.

The previous prime is 12125497. The next prime is 12125521. The reversal of 12125507 is 70552121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12125507 - 2⁸ = 12125251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12125587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12632 + ... + 13557.

It is an arithmetic number, because the mean of its divisors is an integer number (3038040).

Almost surely, 2^12125507 is an apocalyptic number.

12125507 is a deficient number, since it is larger than the sum of its proper divisors (26653).

12125507 is an equidigital number, since it uses as much as digits as its factorization.

12125507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26652.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 12125507 is about 3482.1698694923. The cubic root of 12125507 is about 229.7382466459.

Adding to 12125507 its reverse (70552121), we get a palindrome (82677628).

The spelling of 12125507 in words is "twelve million, one hundred twenty-five thousand, five hundred seven".