4256136522 has 192 divisors, whose sum is σ = 10982522880. Its totient is φ = 1218460320.

The previous prime is 4256136509. The next prime is 4256136527. The reversal of 4256136522 is 2256316524.

4256136522 is a `hidden beast` number, since 42 + 5 + 61 + 36 + 522 = 666.

It is a super-2 number, since 2×4256136522² = 36229396187804512968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4256136527) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19085703 + ... + 19085925.

It is an arithmetic number, because the mean of its divisors is an integer number (57200640).

Almost surely, 2^4256136522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4256136522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5491261440).

4256136522 is an abundant number, since it is smaller than the sum of its proper divisors (6726386358).

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

4256136522 is a wasteful number, since it uses less digits than its factorization.

4256136522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 389 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 4256136522 is about 65239.0720504208. The cubic root of 4256136522 is about 1620.5851315651.

The spelling of 4256136522 in words is "four billion, two hundred fifty-six million, one hundred thirty-six thousand, five hundred twenty-two".