25440016077 has 24 divisors (see below), whose sum is σ = 43020519360. Its totient is φ = 14182585920.

The previous prime is 25440016073. The next prime is 25440016103. The reversal of 25440016077 is 77061004452.

25440016077 is a `hidden beast` number, since 2 + 5 + 4 + 40 + 0 + 1 + 607 + 7 = 666.

It is not a de Polignac number, because 25440016077 - 2² = 25440016073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25440016073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4921927 + ... + 4927092.

It is an arithmetic number, because the mean of its divisors is an integer number (1792521640).

Almost surely, 2^25440016077 is an apocalyptic number.

It is an amenable number.

25440016077 is a deficient number, since it is larger than the sum of its proper divisors (17580503283).

25440016077 is a wasteful number, since it uses less digits than its factorization.

25440016077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9849073 (or 9849070 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 25440016077 in words is "twenty-five billion, four hundred forty million, sixteen thousand, seventy-seven".