10520545521250 has 80 divisors (see below), whose sum is σ = 20386017230040. Its totient is φ = 4067910720000.

The previous prime is 10520545521221. The next prime is 10520545521253. The reversal of 10520545521250 is 5212554502501.

It can be written as a sum of positive squares in 20 ways, for example, as 7754314607649 + 2766230913601 = 2784657^2 + 1663199^2 .

It is a super-2 number, since 2×10520545521250² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10520545521253) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4644604 + ... + 6527896.

Almost surely, 2^{10520545521250} is an apocalyptic number.

10520545521250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10520545521250 is a deficient number, since it is larger than the sum of its proper divisors (9865471708790).

10520545521250 is a wasteful number, since it uses less digits than its factorization.

10520545521250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883465 (or 1883450 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 10520545521250 in words is "ten trillion, five hundred twenty billion, five hundred forty-five million, five hundred twenty-one thousand, two hundred fifty".