25152206765567 has 4 divisors (see below), whose sum is σ = 28745379160656. Its totient is φ = 21559034370480.

The previous prime is 25152206765563. The next prime is 25152206765579. The reversal of 25152206765567 is 76556760225152.

It is a happy number.

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 25152206765567 - 2² = 25152206765563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25152206765563) 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, 1796586197534 + ... + 1796586197547.

It is an arithmetic number, because the mean of its divisors is an integer number (7186344790164).

Almost surely, 2^{25152206765567} is an apocalyptic number.

25152206765567 is a deficient number, since it is larger than the sum of its proper divisors (3593172395089).

25152206765567 is an equidigital number, since it uses as much as digits as its factorization.

25152206765567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593172395088.

The product of its (nonzero) digits is 52920000, while the sum is 59.

The spelling of 25152206765567 in words is "twenty-five trillion, one hundred fifty-two billion, two hundred six million, seven hundred sixty-five thousand, five hundred sixty-seven".