43551344660425 has 48 divisors (see below), whose sum is σ = 63243673574400. Its totient is φ = 29133508622400.

The previous prime is 43551344660377. The next prime is 43551344660429. The reversal of 43551344660425 is 52406644315534.

It is not a de Polignac number, because 43551344660425 - 2⁹ = 43551344659913 is a prime.

It is a super-2 number, since 2×43551344660425² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43551344660429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14746845 + ... + 17451994.

It is an arithmetic number, because the mean of its divisors is an integer number (1317576532800).

Almost surely, 2^{43551344660425} is an apocalyptic number.

It is an amenable number.

43551344660425 is a deficient number, since it is larger than the sum of its proper divisors (19692328913975).

43551344660425 is a wasteful number, since it uses less digits than its factorization.

43551344660425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32199046 (or 32199041 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 52.

Adding to 43551344660425 its reverse (52406644315534), we get a palindrome (95957988975959).

The spelling of 43551344660425 in words is "forty-three trillion, five hundred fifty-one billion, three hundred forty-four million, six hundred sixty thousand, four hundred twenty-five".