3505321420425 has 192 divisors, whose sum is σ = 7463672294400. Its totient is φ = 1595045260800.

The previous prime is 3505321420423. The next prime is 3505321420451. The reversal of 3505321420425 is 5240241235053.

3505321420425 is a `hidden beast` number, since 3 + 50 + 532 + 14 + 20 + 42 + 5 = 666.

It is not a de Polignac number, because 3505321420425 - 2¹ = 3505321420423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3505321420425.

It is not an unprimeable number, because it can be changed into a prime (3505321420423) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 14978917 + ... + 15211133.

It is an arithmetic number, because the mean of its divisors is an integer number (38873293200).

Almost surely, 2^{3505321420425} is an apocalyptic number.

It is an amenable number.

3505321420425 is an abundant number, since it is smaller than the sum of its proper divisors (3958350873975).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3505321420425 is a wasteful number, since it uses less digits than its factorization.

3505321420425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232373 (or 232362 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 3505321420425 its reverse (5240241235053), we get a palindrome (8745562655478).

The spelling of 3505321420425 in words is "three trillion, five hundred five billion, three hundred twenty-one million, four hundred twenty thousand, four hundred twenty-five".