25540298665792 has 56 divisors (see below), whose sum is σ = 53414762908640. Its totient is φ = 12083118312960.

The previous prime is 25540298665769. The next prime is 25540298665799. The reversal of 25540298665792 is 29756689204552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25540298665799) 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, 11962983 + ... + 13935334.

It is an arithmetic number, because the mean of its divisors is an integer number (953835051940).

Almost surely, 2^{25540298665792} is an apocalyptic number.

It is an amenable number.

25540298665792 is an abundant number, since it is smaller than the sum of its proper divisors (27874464242848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25540298665792 is a wasteful number, since it uses less digits than its factorization.

25540298665792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25899159 (or 25899149 counting only the distinct ones).

The product of its (nonzero) digits is 653184000, while the sum is 70.

The spelling of 25540298665792 in words is "twenty-five trillion, five hundred forty billion, two hundred ninety-eight million, six hundred sixty-five thousand, seven hundred ninety-two".