25135717067 has 4 divisors (see below), whose sum is σ = 25138537296. Its totient is φ = 25132896840.

The previous prime is 25135716997. The next prime is 25135717091. The reversal of 25135717067 is 76071753152.

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 25135717067 - 2⁸ = 25135716811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25135717267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1396703 + ... + 1414584.

It is an arithmetic number, because the mean of its divisors is an integer number (6284634324).

Almost surely, 2^25135717067 is an apocalyptic number.

25135717067 is a deficient number, since it is larger than the sum of its proper divisors (2820229).

25135717067 is an equidigital number, since it uses as much as digits as its factorization.

25135717067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820228.

The product of its (nonzero) digits is 308700, while the sum is 44.

The spelling of 25135717067 in words is "twenty-five billion, one hundred thirty-five million, seven hundred seventeen thousand, sixty-seven".