257025827 has 4 divisors (see below), whose sum is σ = 257482920. Its totient is φ = 256568736.

The previous prime is 257025823. The next prime is 257025829. The reversal of 257025827 is 728520752.

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

It is a cyclic number.

It is not a de Polignac number, because 257025827 - 2² = 257025823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257025823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227702 + ... + 228827.

It is an arithmetic number, because the mean of its divisors is an integer number (64370730).

Almost surely, 2^257025827 is an apocalyptic number.

257025827 is a deficient number, since it is larger than the sum of its proper divisors (457093).

257025827 is an equidigital number, since it uses as much as digits as its factorization.

257025827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457092.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 257025827 is about 16032.0250436431. The cubic root of 257025827 is about 635.8074148580.

The spelling of 257025827 in words is "two hundred fifty-seven million, twenty-five thousand, eight hundred twenty-seven".