8251491452 has 12 divisors (see below), whose sum is σ = 14938045080. Its totient is φ = 3983478576.

The previous prime is 8251491421. The next prime is 8251491473. The reversal of 8251491452 is 2541941528.

It is a super-2 number, since 2×8251491452² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 35566658 + ... + 35566889.

It is an arithmetic number, because the mean of its divisors is an integer number (1244837090).

Almost surely, 2^8251491452 is an apocalyptic number.

It is an amenable number.

8251491452 is a deficient number, since it is larger than the sum of its proper divisors (6686553628).

8251491452 is a wasteful number, since it uses less digits than its factorization.

8251491452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71133580 (or 71133578 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 8251491452 is about 90837.7204249424. The cubic root of 8251491452 is about 2020.7417669240.

The spelling of 8251491452 in words is "eight billion, two hundred fifty-one million, four hundred ninety-one thousand, four hundred fifty-two".