2501562500 has 54 divisors (see below), whose sum is σ = 5475583134. Its totient is φ = 1000000000.

The previous prime is 2501562499. The next prime is 2501562509. The reversal of 2501562500 is 52651052.

It can be written as a sum of positive squares in 9 ways, for example, as 1721254144 + 780308356 = 41488^2 + 27934^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2501562500.

It is not an unprimeable number, because it can be changed into a prime (2501562509) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1561700 + ... + 1563300.

Almost surely, 2^2501562500 is an apocalyptic number.

2501562500 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 2501562500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2737791567).

2501562500 is an abundant number, since it is smaller than the sum of its proper divisors (2974020634).

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

2501562500 is an frugal number, since it uses more digits than its factorization.

2501562500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645 (or 1608 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2501562500 is about 50015.6225593564. The cubic root of 2501562500 is about 1357.4915012463.

The spelling of 2501562500 in words is "two billion, five hundred one million, five hundred sixty-two thousand, five hundred".