257525382 has 8 divisors (see below), whose sum is σ = 515050776. Its totient is φ = 85841792.

The previous prime is 257525381. The next prime is 257525399. The reversal of 257525382 is 283525752.

257525382 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

257525382 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 257525382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257525381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21460443 + ... + 21460454.

It is an arithmetic number, because the mean of its divisors is an integer number (64381347).

Almost surely, 2^257525382 is an apocalyptic number.

257525382 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257525382 is a wasteful number, since it uses less digits than its factorization.

257525382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42920902.

The product of its digits is 168000, while the sum is 39.

The square root of 257525382 is about 16047.5973902638. The cubic root of 257525382 is about 636.2190663809.

The spelling of 257525382 in words is "two hundred fifty-seven million, five hundred twenty-five thousand, three hundred eighty-two".