25985289255 has 32 divisors (see below), whose sum is σ = 44556701184. Its totient is φ = 12897979776.

The previous prime is 25985289251. The next prime is 25985289277. The reversal of 25985289255 is 55298258952.

It is not a de Polignac number, because 25985289255 - 2² = 25985289251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25985289251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1005069 + ... + 1030598.

It is an arithmetic number, because the mean of its divisors is an integer number (1392396912).

Almost surely, 2^25985289255 is an apocalyptic number.

25985289255 is a deficient number, since it is larger than the sum of its proper divisors (18571411929).

25985289255 is a wasteful number, since it uses less digits than its factorization.

25985289255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035735.

The product of its digits is 25920000, while the sum is 60.

The spelling of 25985289255 in words is "twenty-five billion, nine hundred eighty-five million, two hundred eighty-nine thousand, two hundred fifty-five".