25565111005355 has 4 divisors (see below), whose sum is σ = 30678133206432. Its totient is φ = 20452088804280.

The previous prime is 25565111005307. The next prime is 25565111005517. The reversal of 25565111005355 is 55350011156552.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25565111005355 - 2⁴⁴ = 7972924960939 is a prime.

It is a super-2 number, since 2×25565111005355² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2556511100531 + ... + 2556511100540.

It is an arithmetic number, because the mean of its divisors is an integer number (7669533301608).

Almost surely, 2^{25565111005355} is an apocalyptic number.

25565111005355 is a deficient number, since it is larger than the sum of its proper divisors (5113022201077).

25565111005355 is an equidigital number, since it uses as much as digits as its factorization.

25565111005355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113022201076.

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 25565111005355 in words is "twenty-five trillion, five hundred sixty-five billion, one hundred eleven million, five thousand, three hundred fifty-five".