25525245530 has 16 divisors (see below), whose sum is σ = 46142636904. Its totient is φ = 10166277120.

The previous prime is 25525245521. The next prime is 25525245541. The reversal of 25525245530 is 3554252552.

It can be written as a sum of positive squares in 4 ways, for example, as 12228157561 + 13297087969 = 110581^2 + 115313^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5475191 + ... + 5479850.

Almost surely, 2^25525245530 is an apocalyptic number.

25525245530 is a deficient number, since it is larger than the sum of its proper divisors (20617391374).

25525245530 is a wasteful number, since it uses less digits than its factorization.

25525245530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10955281.

The product of its (nonzero) digits is 300000, while the sum is 38.

The spelling of 25525245530 in words is "twenty-five billion, five hundred twenty-five million, two hundred forty-five thousand, five hundred thirty".