12512451530 has 16 divisors (see below), whose sum is σ = 22523741280. Its totient is φ = 5004685392.

The previous prime is 12512451517. The next prime is 12512451533. The reversal of 12512451530 is 3515421521.

It is a super-2 number, since 2×12512451530² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12512451493 and 12512451502.

It is not an unprimeable number, because it can be changed into a prime (12512451533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240161 + ... + 287579.

It is an arithmetic number, because the mean of its divisors is an integer number (1407733830).

Almost surely, 2^12512451530 is an apocalyptic number.

12512451530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12512451530 is a deficient number, since it is larger than the sum of its proper divisors (10011289750).

12512451530 is a wasteful number, since it uses less digits than its factorization.

12512451530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73813.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 12512451530 in words is "twelve billion, five hundred twelve million, four hundred fifty-one thousand, five hundred thirty".