25775121 has 8 divisors (see below), whose sum is σ = 34682560. Its totient is φ = 17025552.

The previous prime is 25775117. The next prime is 25775143. The reversal of 25775121 is 12157752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25775121 - 2² = 25775117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25775021) 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, 39085 + ... + 39738.

It is an arithmetic number, because the mean of its divisors is an integer number (4335320).

Almost surely, 2^25775121 is an apocalyptic number.

It is an amenable number.

25775121 is a deficient number, since it is larger than the sum of its proper divisors (8907439).

25775121 is a wasteful number, since it uses less digits than its factorization.

25775121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78935.

The product of its digits is 4900, while the sum is 30.

The square root of 25775121 is about 5076.9204248245. The cubic root of 25775121 is about 295.3930258888.

The spelling of 25775121 in words is "twenty-five million, seven hundred seventy-five thousand, one hundred twenty-one".