25120055 has 4 divisors (see below), whose sum is σ = 30144072. Its totient is φ = 20096040.

The previous prime is 25120037. The next prime is 25120091. The reversal of 25120055 is 55002152.

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

It is not a de Polignac number, because 25120055 - 2¹⁴ = 25103671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2512001 + ... + 2512010.

It is an arithmetic number, because the mean of its divisors is an integer number (7536018).

Almost surely, 2^25120055 is an apocalyptic number.

25120055 is a deficient number, since it is larger than the sum of its proper divisors (5024017).

25120055 is an equidigital number, since it uses as much as digits as its factorization.

25120055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024016.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 25120055 is about 5011.9911213010. The cubic root of 25120055 is about 292.8690838450.

The spelling of 25120055 in words is "twenty-five million, one hundred twenty thousand, fifty-five".