100225520 has 20 divisors (see below), whose sum is σ = 233024520. Its totient is φ = 40090176.

The previous prime is 100225507. The next prime is 100225529. The reversal of 100225520 is 25522001.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100225529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626330 + ... + 626489.

It is an arithmetic number, because the mean of its divisors is an integer number (11651226).

Almost surely, 2^100225520 is an apocalyptic number.

100225520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100225520 is an abundant number, since it is smaller than the sum of its proper divisors (132799000).

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

100225520 is a wasteful number, since it uses less digits than its factorization.

100225520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252832 (or 1252826 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 100225520 is about 10011.2696497497. The cubic root of 100225520 is about 464.5075450964.

Adding to 100225520 its reverse (25522001), we get a palindrome (125747521).

The spelling of 100225520 in words is "one hundred million, two hundred twenty-five thousand, five hundred twenty".