12545130302500 has 60 divisors (see below), whose sum is σ = 27440040160764. Its totient is φ = 5016890752000.

The previous prime is 12545130302483. The next prime is 12545130302513. The reversal of 12545130302500 is 520303154521.

It can be written as a sum of positive squares in 10 ways, for example, as 11981165349924 + 563964952576 = 3461382^2 + 750976^2 .

It is a super-4 number, since 4×12545130302500⁴ (a number of 53 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10263984 + ... + 11421016.

Almost surely, 2^{12545130302500} is an apocalyptic number.

12545130302500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12545130302500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13720020080382).

12545130302500 is an abundant number, since it is smaller than the sum of its proper divisors (14894909858264).

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

12545130302500 is a wasteful number, since it uses less digits than its factorization.

12545130302500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161394 (or 1161377 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 12545130302500 in words is "twelve trillion, five hundred forty-five billion, one hundred thirty million, three hundred two thousand, five hundred".