12530425421530 has 16 divisors (see below), whose sum is σ = 22561149848904. Its totient is φ = 5010751481920.

The previous prime is 12530425421473. The next prime is 12530425421531. The reversal of 12530425421530 is 3512452403521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12447157970809 + 83267450721 = 3528053^2 + 288561^2 .

It is a super-2 number, since 2×12530425421530² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12530425421530.

It is not an unprimeable number, because it can be changed into a prime (12530425421531) 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, 177298741 + ... + 177369400.

Almost surely, 2^{12530425421530} is an apocalyptic number.

12530425421530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12530425421530 is a deficient number, since it is larger than the sum of its proper divisors (10030724427374).

12530425421530 is a wasteful number, since it uses less digits than its factorization.

12530425421530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354671681.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 12530425421530 in words is "twelve trillion, five hundred thirty billion, four hundred twenty-five million, four hundred twenty-one thousand, five hundred thirty".