3506345961625 has 16 divisors (see below), whose sum is σ = 4712528974608. Its totient is φ = 2589301632000.

The previous prime is 3506345961623. The next prime is 3506345961631. The reversal of 3506345961625 is 5261695436053.

It can be written as a sum of positive squares in 8 ways, for example, as 2731166085376 + 775179876249 = 1652624^2 + 880443^2 .

It is not a de Polignac number, because 3506345961625 - 2¹ = 3506345961623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3506345961623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1078874056 + ... + 1078877305.

It is an arithmetic number, because the mean of its divisors is an integer number (294533060913).

Almost surely, 2^{3506345961625} is an apocalyptic number.

It is an amenable number.

3506345961625 is a deficient number, since it is larger than the sum of its proper divisors (1206183012983).

3506345961625 is a wasteful number, since it uses less digits than its factorization.

3506345961625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157751389 (or 2157751379 counting only the distinct ones).

The product of its (nonzero) digits is 17496000, while the sum is 55.

The spelling of 3506345961625 in words is "three trillion, five hundred six billion, three hundred forty-five million, nine hundred sixty-one thousand, six hundred twenty-five".