257025001 has 4 divisors (see below), whose sum is σ = 257305600. Its totient is φ = 256744404.

The previous prime is 257024923. The next prime is 257025011. The reversal of 257025001 is 100520752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 257025001 - 2²³ = 248636393 is a prime.

It is a super-2 number, since 2×257025001² = 132123702278100002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257025011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138921 + ... + 140758.

It is an arithmetic number, because the mean of its divisors is an integer number (64326400).

Almost surely, 2^257025001 is an apocalyptic number.

It is an amenable number.

257025001 is a deficient number, since it is larger than the sum of its proper divisors (280599).

257025001 is an equidigital number, since it uses as much as digits as its factorization.

257025001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280598.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 257025001 is about 16031.9992826846. Note that the first 3 decimals coincide. The cubic root of 257025001 is about 635.8067337624.

Adding to 257025001 its reverse (100520752), we get a palindrome (357545753).

It can be divided in two parts, 25702 and 5001, that added together give a palindrome (30703).

The spelling of 257025001 in words is "two hundred fifty-seven million, twenty-five thousand, one".