2525542500 has 120 divisors (see below), whose sum is σ = 7930561408. Its totient is φ = 621648000.

The previous prime is 2525542469. The next prime is 2525542501. The reversal of 2525542500 is 52455252.

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

It is not an unprimeable number, because it can be changed into a prime (2525542501) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 84549 + ... + 110451.

Almost surely, 2^2525542500 is an apocalyptic number.

2525542500 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 2525542500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3965280704).

2525542500 is an abundant number, since it is smaller than the sum of its proper divisors (5405018908).

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

2525542500 is a wasteful number, since it uses less digits than its factorization.

2525542500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25943 (or 25926 counting only the distinct ones).

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

The square root of 2525542500 is about 50254.7758924463. The cubic root of 2525542500 is about 1361.8153561678.

Adding to 2525542500 its reverse (52455252), we get a palindrome (2577997752).

The spelling of 2525542500 in words is "two billion, five hundred twenty-five million, five hundred forty-two thousand, five hundred".