42150135321225 has 18 divisors (see below), whose sum is σ = 75495575709086. Its totient is φ = 22480072171200.

The previous prime is 42150135321199. The next prime is 42150135321253. The reversal of 42150135321225 is 52212353105124.

42150135321225 is a `hidden beast` number, since 4 + 21 + 50 + 1 + 353 + 212 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 10309936606281 + 31840198714944 = 3210909^2 + 5642712^2 .

It is not a de Polignac number, because 42150135321225 - 2⁵ = 42150135321193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42150135321225.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 93666967156 + ... + 93666967605.

Almost surely, 2^{42150135321225} is an apocalyptic number.

42150135321225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42150135321225 is a deficient number, since it is larger than the sum of its proper divisors (33345440387861).

42150135321225 is a wasteful number, since it uses less digits than its factorization.

42150135321225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187333934777 (or 187333934769 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 42150135321225 its reverse (52212353105124), we get a palindrome (94362488426349).

The spelling of 42150135321225 in words is "forty-two trillion, one hundred fifty billion, one hundred thirty-five million, three hundred twenty-one thousand, two hundred twenty-five".