2500002500 has 60 divisors (see below), whose sum is σ = 5521691868. Its totient is φ = 990000000.

The previous prime is 2500002481. The next prime is 2500002517. The reversal of 2500002500 is 52000052.

It can be written as a sum of positive squares in 10 ways, for example, as 541585984 + 1958416516 = 23272^2 + 44254^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 247550 + ... + 257450.

Almost surely, 2^2500002500 is an apocalyptic number.

2500002500 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 2500002500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2760845934).

2500002500 is an abundant number, since it is smaller than the sum of its proper divisors (3021689368).

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

2500002500 is a wasteful number, since it uses less digits than its factorization.

2500002500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10026 (or 10009 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 2500002500 is about 50000.0249999938. The cubic root of 2500002500 is about 1357.2092607002.

Adding to 2500002500 its reverse (52000052), we get a palindrome (2552002552).

It can be divided in two parts, 250000 and 2500, that multiplied together give a square (625000000 = 25000²).

The spelling of 2500002500 in words is "two billion, five hundred million, two thousand, five hundred".