25525000055 has 8 divisors (see below), whose sum is σ = 31049589552. Its totient is φ = 20140273728.

The previous prime is 25525000051. The next prime is 25525000087. The reversal of 25525000055 is 55000052552.

It is a happy number.

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 25525000055 - 2² = 25525000051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25524999991 and 25525000027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25525000051) 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, 34965389 + ... + 34966118.

It is an arithmetic number, because the mean of its divisors is an integer number (3881198694).

Almost surely, 2^25525000055 is an apocalyptic number.

25525000055 is a deficient number, since it is larger than the sum of its proper divisors (5524589497).

25525000055 is an equidigital number, since it uses as much as digits as its factorization.

25525000055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69931585.

The product of its (nonzero) digits is 12500, while the sum is 29.

The spelling of 25525000055 in words is "twenty-five billion, five hundred twenty-five million, fifty-five", and thus it is an aban number.