7425105543281 has 4 divisors (see below), whose sum is σ = 7425411366564. Its totient is φ = 7424799720000.

The previous prime is 7425105543259. The next prime is 7425105543319. The reversal of 7425105543281 is 1823455015247.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6175304520256 + 1249801023025 = 2485016^2 + 1117945^2 .

It is a cyclic number.

It is not a de Polignac number, because 7425105543281 - 2¹⁴ = 7425105526897 is a prime.

It is a super-2 number, since 2×7425105543281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7425105543211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152875220 + ... + 152923781.

It is an arithmetic number, because the mean of its divisors is an integer number (1856352841641).

Almost surely, 2^{7425105543281} is an apocalyptic number.

It is an amenable number.

7425105543281 is a deficient number, since it is larger than the sum of its proper divisors (305823283).

7425105543281 is a wasteful number, since it uses less digits than its factorization.

7425105543281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305823282.

The product of its (nonzero) digits is 1344000, while the sum is 47.

The spelling of 7425105543281 in words is "seven trillion, four hundred twenty-five billion, one hundred five million, five hundred forty-three thousand, two hundred eighty-one".