100025350405 has 4 divisors (see below), whose sum is σ = 120030420492. Its totient is φ = 80020280320.

The previous prime is 100025350387. The next prime is 100025350433. The reversal of 100025350405 is 504053520001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504053520001 = 541 ⋅931707061.

It can be written as a sum of positive squares in 2 ways, for example, as 27496935684 + 72528414721 = 165822^2 + 269311^2 .

It is a de Polignac number, because none of the positive numbers 2^k-100025350405 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 100025350405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10002535036 + ... + 10002535045.

It is an arithmetic number, because the mean of its divisors is an integer number (30007605123).

Almost surely, 2^100025350405 is an apocalyptic number.

It is an amenable number.

100025350405 is a deficient number, since it is larger than the sum of its proper divisors (20005070087).

100025350405 is an equidigital number, since it uses as much as digits as its factorization.

100025350405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20005070086.

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 100025350405 its reverse (504053520001), we get a palindrome (604078870406).

The spelling of 100025350405 in words is "one hundred billion, twenty-five million, three hundred fifty thousand, four hundred five".