25555002530 has 16 divisors (see below), whose sum is σ = 46173910464. Its totient is φ = 10183133040.

The previous prime is 25555002511. The next prime is 25555002533. The reversal of 25555002530 is 3520055552.

It is not an unprimeable number, because it can be changed into a prime (25555002533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4855736 + ... + 4860995.

It is an arithmetic number, because the mean of its divisors is an integer number (2885869404).

Almost surely, 2^25555002530 is an apocalyptic number.

25555002530 is a deficient number, since it is larger than the sum of its proper divisors (20618907934).

25555002530 is a wasteful number, since it uses less digits than its factorization.

25555002530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9717001.

The product of its (nonzero) digits is 37500, while the sum is 32.

The spelling of 25555002530 in words is "twenty-five billion, five hundred fifty-five million, two thousand, five hundred thirty".