25530608894 has 16 divisors (see below), whose sum is σ = 43785950208. Its totient is φ = 10936891512.

The previous prime is 25530608881. The next prime is 25530608897. The reversal of 25530608894 is 49880603552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25530608897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366674 + ... + 430709.

It is an arithmetic number, because the mean of its divisors is an integer number (2736621888).

Almost surely, 2^25530608894 is an apocalyptic number.

25530608894 is a deficient number, since it is larger than the sum of its proper divisors (18255341314).

25530608894 is a wasteful number, since it uses less digits than its factorization.

25530608894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799679.

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 25530608894 in words is "twenty-five billion, five hundred thirty million, six hundred eight thousand, eight hundred ninety-four".