25275067665 has 32 divisors (see below), whose sum is σ = 41728974336. Its totient is φ = 13055216640.

The previous prime is 25275067639. The next prime is 25275067693. The reversal of 25275067665 is 56676057252.

It is not a de Polignac number, because 25275067665 - 2¹⁹ = 25274543377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65737 + ... + 234246.

It is an arithmetic number, because the mean of its divisors is an integer number (1304030448).

Almost surely, 2^25275067665 is an apocalyptic number.

It is an amenable number.

25275067665 is a deficient number, since it is larger than the sum of its proper divisors (16453906671).

25275067665 is a wasteful number, since it uses less digits than its factorization.

25275067665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300169.

The product of its (nonzero) digits is 5292000, while the sum is 51.

The spelling of 25275067665 in words is "twenty-five billion, two hundred seventy-five million, sixty-seven thousand, six hundred sixty-five".