4425894495961 has 3 divisors (see below), whose sum is σ = 4425896599743. Its totient is φ = 4425892392180.

The previous prime is 4425894495959. The next prime is 4425894495989. The reversal of 4425894495961 is 1695944985244.

The square root of 4425894495961 is 2103781.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 4042543561 + 4421851952400 = 63581^2 + 2102820^2 .

It is not a de Polignac number, because 4425894495961 - 2¹ = 4425894495959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4425894495361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1051891 + ... + 3155671.

It is an arithmetic number, because the mean of its divisors is an integer number (1475298866581).

Almost surely, 2^{4425894495961} is an apocalyptic number.

4425894495961 is the 2103781-st square number.

4425894495961 is the 1051891-st centered octagonal number.

It is an amenable number.

4425894495961 is a deficient number, since it is larger than the sum of its proper divisors (2103782).

4425894495961 is an frugal number, since it uses more digits than its factorization.

4425894495961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4207562 (or 2103781 counting only the distinct ones).

The product of its digits is 447897600, while the sum is 70.

The spelling of 4425894495961 in words is "four trillion, four hundred twenty-five billion, eight hundred ninety-four million, four hundred ninety-five thousand, nine hundred sixty-one".