25555340085 has 32 divisors (see below), whose sum is σ = 44656455168. Its totient is φ = 12376365120.

The previous prime is 25555340059. The next prime is 25555340087. The reversal of 25555340085 is 58004355552.

It is not a de Polignac number, because 25555340085 - 2⁶ = 25555340021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25555340087) 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, 57994 + ... + 233396.

It is an arithmetic number, because the mean of its divisors is an integer number (1395514224).

Almost surely, 2^25555340085 is an apocalyptic number.

It is an amenable number.

25555340085 is a deficient number, since it is larger than the sum of its proper divisors (19101115083).

25555340085 is a wasteful number, since it uses less digits than its factorization.

25555340085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176305.

The product of its (nonzero) digits is 600000, while the sum is 42.

The spelling of 25555340085 in words is "twenty-five billion, five hundred fifty-five million, three hundred forty thousand, eighty-five".