100555425 has 120 divisors (see below), whose sum is σ = 207415296. Its totient is φ = 47900160.

The previous prime is 100555421. The next prime is 100555439. The reversal of 100555425 is 524555001.

100555425 is a `hidden beast` number, since 100 + 5 + 554 + 2 + 5 = 666.

It is not a de Polignac number, because 100555425 - 2² = 100555421 is a prime.

It is a super-2 number, since 2×100555425² = 20222786993861250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100555421) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 791712 + ... + 791838.

Almost surely, 2^100555425 is an apocalyptic number.

100555425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100555425 is an abundant number, since it is smaller than the sum of its proper divisors (106859871).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100555425 is a wasteful number, since it uses less digits than its factorization.

100555425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 100555425 is about 10027.7327946052. The cubic root of 100555425 is about 465.0166487275.

The spelling of 100555425 in words is "one hundred million, five hundred fifty-five thousand, four hundred twenty-five".