43111312025 has 12 divisors (see below), whose sum is σ = 53601357612. Its totient is φ = 34396578240.

The previous prime is 43111312021. The next prime is 43111312063. The reversal of 43111312025 is 52021311134.

It can be written as a sum of positive squares in 6 ways, for example, as 246992656 + 42864319369 = 15716^2 + 207037^2 .

It is not a de Polignac number, because 43111312025 - 2² = 43111312021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43111312021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2302274 + ... + 2320923.

It is an arithmetic number, because the mean of its divisors is an integer number (4466779801).

Almost surely, 2^43111312025 is an apocalyptic number.

It is an amenable number.

43111312025 is a deficient number, since it is larger than the sum of its proper divisors (10490045587).

43111312025 is a wasteful number, since it uses less digits than its factorization.

43111312025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623580 (or 4623575 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 43111312025 its reverse (52021311134), we get a palindrome (95132623159).

The spelling of 43111312025 in words is "forty-three billion, one hundred eleven million, three hundred twelve thousand, twenty-five".