257427425 has 12 divisors (see below), whose sum is σ = 323253120. Its totient is φ = 203333520.

The previous prime is 257427407. The next prime is 257427433. The reversal of 257427425 is 524724752.

It is a happy number.

257427425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 257427425 - 2⁶ = 257427361 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63197 + ... + 67146.

It is an arithmetic number, because the mean of its divisors is an integer number (26937760).

Almost surely, 2^257427425 is an apocalyptic number.

257427425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

257427425 is a deficient number, since it is larger than the sum of its proper divisors (65825695).

257427425 is a wasteful number, since it uses less digits than its factorization.

257427425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130432 (or 130427 counting only the distinct ones).

The product of its digits is 156800, while the sum is 38.

The square root of 257427425 is about 16044.5450231535. The cubic root of 257427425 is about 636.1383882302.

The spelling of 257427425 in words is "two hundred fifty-seven million, four hundred twenty-seven thousand, four hundred twenty-five".