2501012100 has 72 divisors (see below), whose sum is σ = 7272798400. Its totient is φ = 663569280.

The previous prime is 2501012083. The next prime is 2501012147. The reversal of 2501012100 is 12101052.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38754 + ... + 80646.

Almost surely, 2^2501012100 is an apocalyptic number.

2501012100 is a gapful number since it is divisible by the number (20) 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 2501012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3636399200).

2501012100 is an abundant number, since it is smaller than the sum of its proper divisors (4771786300).

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

2501012100 is a wasteful number, since it uses less digits than its factorization.

2501012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42109 (or 42102 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 2501012100 is about 50010.1199758609. The cubic root of 2501012100 is about 1357.3919343921.

Adding to 2501012100 its reverse (12101052), we get a palindrome (2513113152).

The spelling of 2501012100 in words is "two billion, five hundred one million, twelve thousand, one hundred".