355143420225 has 144 divisors (see below), whose sum is σ = 740368309824. Its totient is φ = 160822272000.

The previous prime is 355143420211. The next prime is 355143420241. The reversal of 355143420225 is 522024341553.

355143420225 is a `hidden beast` number, since 3 + 5 + 5 + 1 + 4 + 3 + 420 + 225 = 666.

It is not a de Polignac number, because 355143420225 - 2⁴ = 355143420209 is a prime.

It is a super-2 number, since 2×355143420225² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 355143420225.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5479609 + ... + 5544041.

It is an arithmetic number, because the mean of its divisors is an integer number (5141446596).

Almost surely, 2^355143420225 is an apocalyptic number.

It is an amenable number.

355143420225 is an abundant number, since it is smaller than the sum of its proper divisors (385224889599).

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

355143420225 is a wasteful number, since it uses less digits than its factorization.

355143420225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64608 (or 64600 counting only the distinct ones).

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

Adding to 355143420225 its reverse (522024341553), we get a palindrome (877167761778).

The spelling of 355143420225 in words is "three hundred fifty-five billion, one hundred forty-three million, four hundred twenty thousand, two hundred twenty-five".