25316320156989 has 8 divisors (see below), whose sum is σ = 35222706305472. Its totient is φ = 16143740389920.

The previous prime is 25316320156927. The next prime is 25316320156997. The reversal of 25316320156989 is 98965102361352.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25316320156989 - 2¹⁹ = 25316319632701 is a prime.

It is a super-2 number, since 2×25316320156989² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25316320156789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183451595272 + ... + 183451595409.

It is an arithmetic number, because the mean of its divisors is an integer number (4402838288184).

Almost surely, 2^{25316320156989} is an apocalyptic number.

It is an amenable number.

25316320156989 is a deficient number, since it is larger than the sum of its proper divisors (9906386148483).

25316320156989 is a wasteful number, since it uses less digits than its factorization.

25316320156989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366903190707.

The product of its (nonzero) digits is 20995200, while the sum is 60.

The spelling of 25316320156989 in words is "twenty-five trillion, three hundred sixteen billion, three hundred twenty million, one hundred fifty-six thousand, nine hundred eighty-nine".