25127663765 has 16 divisors (see below), whose sum is σ = 30291926016. Its totient is φ = 20009721600.

The previous prime is 25127663741. The next prime is 25127663791. The reversal of 25127663765 is 56736672152.

It is not a de Polignac number, because 25127663765 - 2¹⁶ = 25127598229 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 15 ways as a sum of consecutive naturals, for example, 4372484 + ... + 4378226.

It is an arithmetic number, because the mean of its divisors is an integer number (1893245376).

Almost surely, 2^25127663765 is an apocalyptic number.

It is an amenable number.

25127663765 is a deficient number, since it is larger than the sum of its proper divisors (5164262251).

25127663765 is a wasteful number, since it uses less digits than its factorization.

25127663765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9620.

The product of its digits is 3175200, while the sum is 50.

The spelling of 25127663765 in words is "twenty-five billion, one hundred twenty-seven million, six hundred sixty-three thousand, seven hundred sixty-five".