2500500025 has 27 divisors (see below), whose sum is σ = 3166790151. Its totient is φ = 1958595840.

The previous prime is 2500500001. The next prime is 2500500059. The reversal of 2500500025 is 5200050052.

The square root of 2500500025 is 50005.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 1215707689 + 1284792336 = 34867^2 + 35844^2 .

It is not a de Polignac number, because 2500500025 - 2¹¹ = 2500497977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2500499975 and 2500500011.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 18251757 + ... + 18251893.

Almost surely, 2^2500500025 is an apocalyptic number.

2500500025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2500500025 is the 50005-th square number.

2500500025 is the 25003-rd centered octagonal number.

It is an amenable number.

2500500025 is a deficient number, since it is larger than the sum of its proper divisors (666290126).

2500500025 is an frugal number, since it uses more digits than its factorization.

2500500025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 19.

The cubic root of 2500500025 is about 1357.2992873767.

Adding to 2500500025 its reverse (5200050052), we get a palindrome (7700550077).

The spelling of 2500500025 in words is "two billion, five hundred million, five hundred thousand, twenty-five".