25609745404 has 36 divisors (see below), whose sum is σ = 47778459120. Its totient is φ = 12008604160.

The previous prime is 25609745363. The next prime is 25609745407. The reversal of 25609745404 is 40454790652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25609745407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285417 + ... + 364255.

It is an arithmetic number, because the mean of its divisors is an integer number (1327179420).

Almost surely, 2^25609745404 is an apocalyptic number.

It is an amenable number.

25609745404 is a deficient number, since it is larger than the sum of its proper divisors (22168713716).

25609745404 is a wasteful number, since it uses less digits than its factorization.

25609745404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79158 (or 79139 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 25609745404 in words is "twenty-five billion, six hundred nine million, seven hundred forty-five thousand, four hundred four".