100205425 has 6 divisors (see below), whose sum is σ = 124254758. Its totient is φ = 80164320.

The previous prime is 100205389. The next prime is 100205447. The reversal of 100205425 is 524502001.

It can be written as a sum of positive squares in 3 ways, for example, as 824464 + 99380961 = 908^2 + 9969^2 .

It is not a de Polignac number, because 100205425 - 2¹⁷ = 100074353 is a prime.

It is a super-2 number, since 2×100205425² = 20082254398861250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2004084 + ... + 2004133.

Almost surely, 2^100205425 is an apocalyptic number.

It is an amenable number.

100205425 is a deficient number, since it is larger than the sum of its proper divisors (24049333).

100205425 is an equidigital number, since it uses as much as digits as its factorization.

100205425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008227 (or 4008222 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 100205425 is about 10010.2659804822. The cubic root of 100205425 is about 464.4764987687.

Adding to 100205425 its reverse (524502001), we get a palindrome (624707426).

The spelling of 100205425 in words is "one hundred million, two hundred five thousand, four hundred twenty-five".