25655195670719 has 4 divisors (see below), whose sum is σ = 25658239361160. Its totient is φ = 25652151980280.

The previous prime is 25655195670661. The next prime is 25655195670803. The reversal of 25655195670719 is 91707659155652.

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

It is a cyclic number.

It is not a de Polignac number, because 25655195670719 - 2¹⁶ = 25655195605183 is a prime.

It is a super-2 number, since 2×25655195670719² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25655195670019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1521832577 + ... + 1521849434.

It is an arithmetic number, because the mean of its divisors is an integer number (6414559840290).

Almost surely, 2^{25655195670719} is an apocalyptic number.

25655195670719 is a deficient number, since it is larger than the sum of its proper divisors (3043690441).

25655195670719 is an equidigital number, since it uses as much as digits as its factorization.

25655195670719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043690440.

The product of its (nonzero) digits is 178605000, while the sum is 68.

The spelling of 25655195670719 in words is "twenty-five trillion, six hundred fifty-five billion, one hundred ninety-five million, six hundred seventy thousand, seven hundred nineteen".