1004025100 has 144 divisors (see below), whose sum is σ = 2508026976. Its totient is φ = 345600000.

The previous prime is 1004025091. The next prime is 1004025101. The reversal of 1004025100 is 15204001.

1004025100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1004025101) 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, 3999975 + ... + 4000225.

It is an arithmetic number, because the mean of its divisors is an integer number (17416854).

It is a vampire number, since it can be written as 25100 ⋅ 40001 (with its own digits).

Almost surely, 2^1004025100 is an apocalyptic number.

1004025100 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 1004025100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1254013488).

1004025100 is an abundant number, since it is smaller than the sum of its proper divisors (1504001876).

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

1004025100 is a wasteful number, since it uses less digits than its factorization.

1004025100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1004025100 is about 31686.3551075222. The cubic root of 1004025100 is about 1001.3399038558.

Adding to 1004025100 its reverse (15204001), we get a palindrome (1019229101).

The spelling of 1004025100 in words is "one billion, four million, twenty-five thousand, one hundred".