395425257 has 16 divisors (see below), whose sum is σ = 542976000. Its totient is φ = 255859344.

The previous prime is 395425231. The next prime is 395425259. The reversal of 395425257 is 752524593.

It is not a de Polignac number, because 395425257 - 2⁶ = 395425193 is a prime.

It is a super-2 number, since 2×395425257² = 312722267747032098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (395425259) 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 15 ways as a sum of consecutive naturals, for example, 157 + ... + 28122.

It is an arithmetic number, because the mean of its divisors is an integer number (33936000).

Almost surely, 2^395425257 is an apocalyptic number.

It is an amenable number.

395425257 is a deficient number, since it is larger than the sum of its proper divisors (147550743).

395425257 is a wasteful number, since it uses less digits than its factorization.

395425257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28420.

The product of its digits is 378000, while the sum is 42.

The square root of 395425257 is about 19885.3025373013. The cubic root of 395425257 is about 733.9866065560.

The spelling of 395425257 in words is "three hundred ninety-five million, four hundred twenty-five thousand, two hundred fifty-seven".