100025620 has 48 divisors (see below), whose sum is σ = 232098048. Its totient is φ = 36016640.

The previous prime is 100025617. The next prime is 100025621. The reversal of 100025620 is 26520001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100025594 and 100025603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100025621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1425 + ... + 14215.

It is an arithmetic number, because the mean of its divisors is an integer number (4835376).

Almost surely, 2^100025620 is an apocalyptic number.

100025620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100025620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116049024).

100025620 is an abundant number, since it is smaller than the sum of its proper divisors (132072428).

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

100025620 is a wasteful number, since it uses less digits than its factorization.

100025620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12840 (or 12838 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 100025620 is about 10001.2809179625. The cubic root of 100025620 is about 464.1985191452.

Adding to 100025620 its reverse (26520001), we get a palindrome (126545621).

The spelling of 100025620 in words is "one hundred million, twenty-five thousand, six hundred twenty".