12520515452 has 12 divisors (see below), whose sum is σ = 22022126280. Its totient is φ = 6228479376.

The previous prime is 12520515431. The next prime is 12520515457. The reversal of 12520515452 is 25451502521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520515457) 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, 7943702 + ... + 7945277.

It is an arithmetic number, because the mean of its divisors is an integer number (1835177190).

Almost surely, 2^12520515452 is an apocalyptic number.

It is an amenable number.

12520515452 is a deficient number, since it is larger than the sum of its proper divisors (9501610828).

12520515452 is a wasteful number, since it uses less digits than its factorization.

12520515452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15889180 (or 15889178 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 12520515452 in words is "twelve billion, five hundred twenty million, five hundred fifteen thousand, four hundred fifty-two".