2500720000 has 80 divisors (see below), whose sum is σ = 6225585300. Its totient is φ = 1000256000.

The previous prime is 2500719989. The next prime is 2500720003. The reversal of 2500720000 is 270052.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500720003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 64371 + ... + 95629.

Almost surely, 2^2500720000 is an apocalyptic number.

2500720000 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 2500720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3112792650).

2500720000 is an abundant number, since it is smaller than the sum of its proper divisors (3724865300).

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

2500720000 is an frugal number, since it uses more digits than its factorization.

2500720000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31293 (or 31266 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 16.

The square root of 2500720000 is about 50007.1994816746. The cubic root of 2500720000 is about 1357.3390878370.

Adding to 2500720000 its reverse (270052), we get a palindrome (2500990052).

It can be divided in two parts, 2500 and 720000, that added together give a square (722500 = 850²).

The spelling of 2500720000 in words is "two billion, five hundred million, seven hundred twenty thousand".