12500545530 has 64 divisors (see below), whose sum is σ = 32869369728. Its totient is φ = 3017410560.

The previous prime is 12500545501. The next prime is 12500545579. The reversal of 12500545530 is 3554500521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4399 + ... + 158178.

It is an arithmetic number, because the mean of its divisors is an integer number (513583902).

Almost surely, 2^12500545530 is an apocalyptic number.

12500545530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12500545530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16434684864).

12500545530 is an abundant number, since it is smaller than the sum of its proper divisors (20368824198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12500545530 is a wasteful number, since it uses less digits than its factorization.

12500545530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162831.

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 12500545530 in words is "twelve billion, five hundred million, five hundred forty-five thousand, five hundred thirty".