105425345301021 has 12 divisors (see below), whose sum is σ = 152281403663740. Its totient is φ = 70283402300160.

The previous prime is 105425345300987. The next prime is 105425345301041. The reversal of 105425345301021 is 120103543524501.

105425345301021 is a `hidden beast` number, since 1 + 0 + 5 + 4 + 2 + 5 + 345 + 301 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24086844387225 + 81338500913796 = 4907835^2 + 9018786^2 .

It is not a de Polignac number, because 105425345301021 - 2²⁷ = 105425211083293 is a prime.

It is a super-2 number, since 2×105425345301021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105425345301041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9225556 + ... + 17203533.

Almost surely, 2^{105425345301021} is an apocalyptic number.

It is an amenable number.

105425345301021 is a deficient number, since it is larger than the sum of its proper divisors (46856058362719).

105425345301021 is a wasteful number, since it uses less digits than its factorization.

105425345301021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26872316 (or 26872313 counting only the distinct ones).

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

Adding to 105425345301021 its reverse (120103543524501), we get a palindrome (225528888825522).

The spelling of 105425345301021 in words is "one hundred five trillion, four hundred twenty-five billion, three hundred forty-five million, three hundred one thousand, twenty-one".