25207445530 has 16 divisors (see below), whose sum is σ = 45399405600. Its totient is φ = 10077199632.

The previous prime is 25207445491. The next prime is 25207445537. The reversal of 25207445530 is 3554470252.

It is a self number, because there is not a number n which added to its sum of digits gives 25207445530.

It is not an unprimeable number, because it can be changed into a prime (25207445537) by changing a digit.

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, 703980 + ... + 738919.

It is an arithmetic number, because the mean of its divisors is an integer number (2837462850).

Almost surely, 2^25207445530 is an apocalyptic number.

25207445530 is a deficient number, since it is larger than the sum of its proper divisors (20191960070).

25207445530 is a wasteful number, since it uses less digits than its factorization.

25207445530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444653.

The product of its (nonzero) digits is 168000, while the sum is 37.

The spelling of 25207445530 in words is "twenty-five billion, two hundred seven million, four hundred forty-five thousand, five hundred thirty".