257025004 has 24 divisors (see below), whose sum is σ = 459345600. Its totient is φ = 125802000.

The previous prime is 257024923. The next prime is 257025011. The reversal of 257025004 is 400520752.

It is a self number, because there is not a number n which added to its sum of digits gives 257025004.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 57067 + ... + 61405.

It is an arithmetic number, because the mean of its divisors is an integer number (19139400).

Almost surely, 2^257025004 is an apocalyptic number.

It is an amenable number.

257025004 is a deficient number, since it is larger than the sum of its proper divisors (202320596).

257025004 is a wasteful number, since it uses less digits than its factorization.

257025004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4653 (or 4651 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 257025004 is about 16031.9993762475. Note that the first 3 decimals coincide. The cubic root of 257025004 is about 635.8067362362.

Adding to 257025004 its reverse (400520752), we get a palindrome (657545756).

The spelling of 257025004 in words is "two hundred fifty-seven million, twenty-five thousand, four".