25544604964 has 12 divisors (see below), whose sum is σ = 44704306864. Its totient is φ = 12771945864.

The previous prime is 25544604949. The next prime is 25544604989. The reversal of 25544604964 is 46940644552.

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 3 ways as a sum of consecutive naturals, for example, 134167 + ... + 262849.

Almost surely, 2^25544604964 is an apocalyptic number.

It is an amenable number.

25544604964 is a deficient number, since it is larger than the sum of its proper divisors (19159701900).

25544604964 is a wasteful number, since it uses less digits than its factorization.

25544604964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178314 (or 178312 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 49.

The spelling of 25544604964 in words is "twenty-five billion, five hundred forty-four million, six hundred four thousand, nine hundred sixty-four".