257427650 has 12 divisors (see below), whose sum is σ = 478815522. Its totient is φ = 102971040.

The previous prime is 257427649. The next prime is 257427659. The reversal of 257427650 is 56724752.

It is a happy number.

257427650 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 123632161 + 133795489 = 11119^2 + 11567^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (257427659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2574227 + ... + 2574326.

Almost surely, 2^257427650 is an apocalyptic number.

257427650 is a deficient number, since it is larger than the sum of its proper divisors (221387872).

257427650 is a wasteful number, since it uses less digits than its factorization.

257427650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5148565 (or 5148560 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 257427650 is about 16044.5520348809. The cubic root of 257427650 is about 636.1385735654.

The spelling of 257427650 in words is "two hundred fifty-seven million, four hundred twenty-seven thousand, six hundred fifty".