100425 has 24 divisors (see below), whose sum is σ = 180544. Its totient is φ = 48960.

The previous prime is 100417. The next prime is 100447. The reversal of 100425 is 524001.

It is not a de Polignac number, because 100425 - 2³ = 100417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100425.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 924 + ... + 1026.

2¹⁰⁰⁴²⁵ is an apocalyptic number.

100425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100425 is a deficient number, since it is larger than the sum of its proper divisors (80119).

100425 is a wasteful number, since it uses less digits than its factorization.

100425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 100425 is about 316.8990375498. The cubic root of 100425 is about 46.4815512432.

Adding to 100425 its reverse (524001), we get a palindrome (624426).

It can be divided in two parts, 100 and 425, that added together give a palindrome (525).

The spelling of 100425 in words is "one hundred thousand, four hundred twenty-five".