3551287607825 has 12 divisors (see below), whose sum is σ = 4404925923468. Its totient is φ = 2840172480000.

The previous prime is 3551287607821. The next prime is 3551287607873. The reversal of 3551287607825 is 5287067821553.

It can be written as a sum of positive squares in 6 ways, for example, as 492468501121 + 3058819106704 = 701761^2 + 1748948^2 .

It is not a de Polignac number, because 3551287607825 - 2² = 3551287607821 is a prime.

It is a super-2 number, since 2×3551287607825² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3551287607821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21355676 + ... + 21521325.

It is an arithmetic number, because the mean of its divisors is an integer number (367077160289).

Almost surely, 2^{3551287607825} is an apocalyptic number.

It is an amenable number.

3551287607825 is a deficient number, since it is larger than the sum of its proper divisors (853638315643).

3551287607825 is a wasteful number, since it uses less digits than its factorization.

3551287607825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42880324 (or 42880319 counting only the distinct ones).

The product of its (nonzero) digits is 28224000, while the sum is 59.

The spelling of 3551287607825 in words is "three trillion, five hundred fifty-one billion, two hundred eighty-seven million, six hundred seven thousand, eight hundred twenty-five".