25905214285 has 8 divisors (see below), whose sum is σ = 31276971360. Its totient is φ = 20597028624.

The previous prime is 25905214273. The next prime is 25905214297. The reversal of 25905214285 is 58241250952.

It is an interprime number because it is at equal distance from previous prime (25905214273) and next prime (25905214297).

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

It is a cyclic number.

It is not a de Polignac number, because 25905214285 - 2²⁷ = 25770996557 is a prime.

It is a super-2 number, since 2×25905214285² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15891955 + ... + 15893584.

It is an arithmetic number, because the mean of its divisors is an integer number (3909621420).

Almost surely, 2^25905214285 is an apocalyptic number.

It is an amenable number.

25905214285 is a deficient number, since it is larger than the sum of its proper divisors (5371757075).

25905214285 is a wasteful number, since it uses less digits than its factorization.

25905214285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31785707.

The product of its (nonzero) digits is 288000, while the sum is 43.

The spelling of 25905214285 in words is "twenty-five billion, nine hundred five million, two hundred fourteen thousand, two hundred eighty-five".