100550025 has 48 divisors (see below), whose sum is σ = 185960320. Its totient is φ = 53265600.

The previous prime is 100550017. The next prime is 100550029. The reversal of 100550025 is 520055001.

It is not a de Polignac number, because 100550025 - 2³ = 100550017 is a prime.

It is a super-2 number, since 2×100550025² = 20220615055001250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100550029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 121764 + ... + 122586.

Almost surely, 2^100550025 is an apocalyptic number.

100550025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100550025 is a deficient number, since it is larger than the sum of its proper divisors (85410295).

100550025 is a wasteful number, since it uses less digits than its factorization.

100550025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023 (or 1012 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 100550025 is about 10027.4635377048. The cubic root of 100550025 is about 465.0083245128.

The spelling of 100550025 in words is "one hundred million, five hundred fifty thousand, twenty-five".