25009272547085 has 8 divisors (see below), whose sum is σ = 30034265944056. Its totient is φ = 19991992112640.

The previous prime is 25009272547079. The next prime is 25009272547087. The reversal of 25009272547085 is 58074527290052.

It can be written as a sum of positive squares in 4 ways, for example, as 2817466317961 + 22191806229124 = 1678531^2 + 4710818^2 .

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

It is not a de Polignac number, because 25009272547085 - 2⁸ = 25009272546829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25009272547085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25009272547087) 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, 1928233496 + ... + 1928246465.

It is an arithmetic number, because the mean of its divisors is an integer number (3754283243007).

Almost surely, 2^{25009272547085} is an apocalyptic number.

It is an amenable number.

25009272547085 is a deficient number, since it is larger than the sum of its proper divisors (5024993396971).

25009272547085 is a wasteful number, since it uses less digits than its factorization.

25009272547085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856481263.

The product of its (nonzero) digits is 14112000, while the sum is 56.

The spelling of 25009272547085 in words is "twenty-five trillion, nine billion, two hundred seventy-two million, five hundred forty-seven thousand, eighty-five".