257020027 has 8 divisors (see below), whose sum is σ = 283277232. Its totient is φ = 231244800.

The previous prime is 257020007. The next prime is 257020031. The reversal of 257020027 is 720020752.

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 257020027 - 2⁷ = 257019899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257019983 and 257020010.

It is not an unprimeable number, because it can be changed into a prime (257020007) 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, 119374 + ... + 121507.

It is an arithmetic number, because the mean of its divisors is an integer number (35409654).

Almost surely, 2^257020027 is an apocalyptic number.

257020027 is a deficient number, since it is larger than the sum of its proper divisors (26257205).

257020027 is a wasteful number, since it uses less digits than its factorization.

257020027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240989.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 257020027 is about 16031.8441546816. The cubic root of 257020027 is about 635.8026323156.

Adding to 257020027 its reverse (720020752), we get a palindrome (977040779).

The spelling of 257020027 in words is "two hundred fifty-seven million, twenty thousand, twenty-seven".