12505522 has 16 divisors (see below), whose sum is σ = 19245600. Its totient is φ = 6092320.

The previous prime is 12505501. The next prime is 12505543. The reversal of 12505522 is 22550521.

It is an interprime number because it is at equal distance from previous prime (12505501) and next prime (12505543).

It is a junction number, because it is equal to n+sod(n) for n = 12505493 and 12505502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15054 + ... + 15862.

It is an arithmetic number, because the mean of its divisors is an integer number (1202850).

Almost surely, 2^12505522 is an apocalyptic number.

12505522 is a deficient number, since it is larger than the sum of its proper divisors (6740078).

12505522 is a wasteful number, since it uses less digits than its factorization.

12505522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 12505522 is about 3536.3147484352. The cubic root of 12505522 is about 232.1136111210.

The spelling of 12505522 in words is "twelve million, five hundred five thousand, five hundred twenty-two".