8521250372 has 12 divisors (see below), whose sum is σ = 14959231980. Its totient is φ = 4247184096.

The previous prime is 8521250341. The next prime is 8521250383. The reversal of 8521250372 is 2730521258.

It can be written as a sum of positive squares in 2 ways, for example, as 2098189636 + 6423060736 = 45806^2 + 80144^2 .

It is a super-2 number, since 2×8521250372² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3358847 + ... + 3361382.

It is an arithmetic number, because the mean of its divisors is an integer number (1246602665).

Almost surely, 2^8521250372 is an apocalyptic number.

It is an amenable number.

8521250372 is a deficient number, since it is larger than the sum of its proper divisors (6437981608).

8521250372 is a wasteful number, since it uses less digits than its factorization.

8521250372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720550 (or 6720548 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 8521250372 is about 92310.6189557843. The cubic root of 8521250372 is about 2042.5268550308.

The spelling of 8521250372 in words is "eight billion, five hundred twenty-one million, two hundred fifty thousand, three hundred seventy-two".