4425561517261 has 4 divisors (see below), whose sum is σ = 4450285324800. Its totient is φ = 4400837709724.

The previous prime is 4425561517217. The next prime is 4425561517301. The reversal of 4425561517261 is 1627151655244.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4425561517261 - 2⁷ = 4425561517133 is a prime.

It is a super-2 number, since 2×4425561517261² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4425561517061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12361903501 + ... + 12361903858.

It is an arithmetic number, because the mean of its divisors is an integer number (1112571331200).

Almost surely, 2^{4425561517261} is an apocalyptic number.

It is an amenable number.

4425561517261 is a deficient number, since it is larger than the sum of its proper divisors (24723807539).

4425561517261 is a wasteful number, since it uses less digits than its factorization.

4425561517261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24723807538.

The product of its digits is 2016000, while the sum is 49.

The spelling of 4425561517261 in words is "four trillion, four hundred twenty-five billion, five hundred sixty-one million, five hundred seventeen thousand, two hundred sixty-one".