100415225 has 12 divisors (see below), whose sum is σ = 127881324. Its totient is φ = 78160320.

The previous prime is 100415221. The next prime is 100415233. The reversal of 100415225 is 522514001.

It can be written as a sum of positive squares in 6 ways, for example, as 355216 + 100060009 = 596^2 + 10003^2 .

It is not a de Polignac number, because 100415225 - 2² = 100415221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100415197 and 100415206.

It is not an unprimeable number, because it can be changed into a prime (100415221) 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, 53354 + ... + 55203.

It is an arithmetic number, because the mean of its divisors is an integer number (10656777).

Almost surely, 2^100415225 is an apocalyptic number.

It is an amenable number.

100415225 is a deficient number, since it is larger than the sum of its proper divisors (27466099).

100415225 is a wasteful number, since it uses less digits than its factorization.

100415225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108604 (or 108599 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 100415225 is about 10020.7397431527. The cubic root of 100415225 is about 464.8004307983.

Adding to 100415225 its reverse (522514001), we get a palindrome (622929226).

The spelling of 100415225 in words is "one hundred million, four hundred fifteen thousand, two hundred twenty-five".