25740203445455 has 4 divisors (see below), whose sum is σ = 30888244134552. Its totient is φ = 20592162756360.

The previous prime is 25740203445433. The next prime is 25740203445503. The reversal of 25740203445455 is 55454430204752.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25740203445455 - 2²⁰ = 25740202396879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2574020344541 + ... + 2574020344550.

It is an arithmetic number, because the mean of its divisors is an integer number (7722061033638).

Almost surely, 2^{25740203445455} is an apocalyptic number.

25740203445455 is a deficient number, since it is larger than the sum of its proper divisors (5148040689097).

25740203445455 is an equidigital number, since it uses as much as digits as its factorization.

25740203445455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5148040689096.

The product of its (nonzero) digits is 13440000, while the sum is 50.

The spelling of 25740203445455 in words is "twenty-five trillion, seven hundred forty billion, two hundred three million, four hundred forty-five thousand, four hundred fifty-five".