2661344025 has 12 divisors (see below), whose sum is σ = 4400088912. Its totient is φ = 1419383440.

The previous prime is 2661343963. The next prime is 2661344039. The reversal of 2661344025 is 5204431662.

It is not a de Polignac number, because 2661344025 - 2⁹ = 2661343513 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17742219 + ... + 17742368.

It is an arithmetic number, because the mean of its divisors is an integer number (366674076).

Almost surely, 2^2661344025 is an apocalyptic number.

2661344025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2661344025 is a deficient number, since it is larger than the sum of its proper divisors (1738744887).

2661344025 is a wasteful number, since it uses less digits than its factorization.

2661344025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35484600 (or 35484595 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 2661344025 is about 51588.2159509321. The cubic root of 2661344025 is about 1385.7993057649.

Adding to 2661344025 its reverse (5204431662), we get a palindrome (7865775687).

The spelling of 2661344025 in words is "two billion, six hundred sixty-one million, three hundred forty-four thousand, twenty-five".