6441355156225 has 24 divisors (see below), whose sum is σ = 8713951164288. Its totient is φ = 4684323883200.

The previous prime is 6441355156163. The next prime is 6441355156237. The reversal of 6441355156225 is 5226515531446.

It is not a de Polignac number, because 6441355156225 - 2⁷ = 6441355156097 is a prime.

It is a super-3 number, since 3×6441355156225³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3631747 + ... + 5106103.

It is an arithmetic number, because the mean of its divisors is an integer number (363081298512).

Almost surely, 2^{6441355156225} is an apocalyptic number.

It is an amenable number.

6441355156225 is a deficient number, since it is larger than the sum of its proper divisors (2272596008063).

6441355156225 is a wasteful number, since it uses less digits than its factorization.

6441355156225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490265 (or 1490260 counting only the distinct ones).

The product of its digits is 4320000, while the sum is 49.

The spelling of 6441355156225 in words is "six trillion, four hundred forty-one billion, three hundred fifty-five million, one hundred fifty-six thousand, two hundred twenty-five".