257194641 has 8 divisors (see below), whose sum is σ = 374101344. Its totient is φ = 155875520.

The previous prime is 257194607. The next prime is 257194661. The reversal of 257194641 is 146491752.

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 257194641 - 2⁶ = 257194577 is a prime.

It is a super-2 number, since 2×257194641² = 132298166718237762, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 257194641.

It is not an unprimeable number, because it can be changed into a prime (257194661) 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, 3896856 + ... + 3896921.

It is an arithmetic number, because the mean of its divisors is an integer number (46762668).

Almost surely, 2^257194641 is an apocalyptic number.

It is an amenable number.

257194641 is a deficient number, since it is larger than the sum of its proper divisors (116906703).

257194641 is a wasteful number, since it uses less digits than its factorization.

257194641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7793791.

The product of its digits is 60480, while the sum is 39.

The square root of 257194641 is about 16037.2890788936. The cubic root of 257194641 is about 635.9465833663.

The spelling of 257194641 in words is "two hundred fifty-seven million, one hundred ninety-four thousand, six hundred forty-one".