25275257 has 8 divisors (see below), whose sum is σ = 28924800. Its totient is φ = 21635424.

The previous prime is 25275251. The next prime is 25275287. The reversal of 25275257 is 75257252.

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 25275257 - 2⁴ = 25275241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25275251) 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, 4469 + ... + 8397.

It is an arithmetic number, because the mean of its divisors is an integer number (3615600).

Almost surely, 2^25275257 is an apocalyptic number.

It is an amenable number.

25275257 is a deficient number, since it is larger than the sum of its proper divisors (3649543).

25275257 is an equidigital number, since it uses as much as digits as its factorization.

25275257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4855.

The product of its digits is 49000, while the sum is 35.

The square root of 25275257 is about 5027.4503478403. The cubic root of 25275257 is about 293.4710010073.

The spelling of 25275257 in words is "twenty-five million, two hundred seventy-five thousand, two hundred fifty-seven".