2661344425 has 6 divisors (see below), whose sum is σ = 3300067118. Its totient is φ = 2129075520.

The previous prime is 2661344419. The next prime is 2661344431. The reversal of 2661344425 is 5244431662.

It is an interprime number because it is at equal distance from previous prime (2661344419) and next prime (2661344431).

It can be written as a sum of positive squares in 3 ways, for example, as 272481049 + 2388863376 = 16507^2 + 48876^2 .

It is not a de Polignac number, because 2661344425 - 2¹¹ = 2661342377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53226864 + ... + 53226913.

Almost surely, 2^2661344425 is an apocalyptic number.

2661344425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2661344425 is a deficient number, since it is larger than the sum of its proper divisors (638722693).

2661344425 is a wasteful number, since it uses less digits than its factorization.

2661344425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106453787 (or 106453782 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

The square root of 2661344425 is about 51588.2198277863. The cubic root of 2661344425 is about 1385.7993751934.

The spelling of 2661344425 in words is "two billion, six hundred sixty-one million, three hundred forty-four thousand, four hundred twenty-five".