4250427756521 has 16 divisors (see below), whose sum is σ = 4409104550400. Its totient is φ = 4093148021760.

The previous prime is 4250427756479. The next prime is 4250427756581. The reversal of 4250427756521 is 1256577240524.

It is not a de Polignac number, because 4250427756521 - 2²⁶ = 4250360647657 is a prime.

It is a super-2 number, since 2×4250427756521² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4250427756521.

It is not an unprimeable number, because it can be changed into a prime (4250427756581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4782446 + ... + 5601128.

It is an arithmetic number, because the mean of its divisors is an integer number (275569034400).

Almost surely, 2^{4250427756521} is an apocalyptic number.

It is an amenable number.

4250427756521 is a deficient number, since it is larger than the sum of its proper divisors (158676793879).

4250427756521 is a wasteful number, since it uses less digits than its factorization.

4250427756521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819536.

The product of its (nonzero) digits is 4704000, while the sum is 50.

The spelling of 4250427756521 in words is "four trillion, two hundred fifty billion, four hundred twenty-seven million, seven hundred fifty-six thousand, five hundred twenty-one".