2525252520 has 128 divisors (see below), whose sum is σ = 8671703040. Its totient is φ = 576288000.

The previous prime is 2525252503. The next prime is 2525252567. The reversal of 2525252520 is 252525252.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 628839 + ... + 632841.

It is an arithmetic number, because the mean of its divisors is an integer number (67747680).

Almost surely, 2^2525252520 is an apocalyptic number.

2525252520 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 2525252520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4335851520).

2525252520 is an abundant number, since it is smaller than the sum of its proper divisors (6146450520).

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

2525252520 is a wasteful number, since it uses less digits than its factorization.

2525252520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775 (or 4771 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 2525252520 is about 50251.8907106986. The cubic root of 2525252520 is about 1361.7632334613.

Adding to 2525252520 its reverse (252525252), we get a palindrome (2777777772).

The spelling of 2525252520 in words is "two billion, five hundred twenty-five million, two hundred fifty-two thousand, five hundred twenty".