25550129 has 8 divisors (see below), whose sum is σ = 27911520. Its totient is φ = 23195200.

The previous prime is 25550123. The next prime is 25550143. The reversal of 25550129 is 92105552.

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 25550129 - 2⁴ = 25550113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25550123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10937 + ... + 13065.

It is an arithmetic number, because the mean of its divisors is an integer number (3488940).

Almost surely, 2^25550129 is an apocalyptic number.

It is an amenable number.

25550129 is a deficient number, since it is larger than the sum of its proper divisors (2361391).

25550129 is a wasteful number, since it uses less digits than its factorization.

25550129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3231.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 25550129 is about 5054.7135428232. The cubic root of 25550129 is about 294.5310138818.

The spelling of 25550129 in words is "twenty-five million, five hundred fifty thousand, one hundred twenty-nine".