12520007 has 4 divisors (see below), whose sum is σ = 13256496. Its totient is φ = 11783520.

The previous prime is 12520003. The next prime is 12520021. The reversal of 12520007 is 70002521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70002521 = 71 ⋅985951.

It is a cyclic number.

It is not a de Polignac number, because 12520007 - 2² = 12520003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 736471 = 12520007 / (1 + 2 + 5 + 2 + 0 + 0 + 0 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368219 + ... + 368252.

It is an arithmetic number, because the mean of its divisors is an integer number (3314124).

Almost surely, 2^12520007 is an apocalyptic number.

12520007 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12520007 is a deficient number, since it is larger than the sum of its proper divisors (736489).

12520007 is an equidigital number, since it uses as much as digits as its factorization.

12520007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736488.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 12520007 is about 3538.3621917492. The cubic root of 12520007 is about 232.2031947031.

Adding to 12520007 its reverse (70002521), we get a palindrome (82522528).

The spelling of 12520007 in words is "twelve million, five hundred twenty thousand, seven".