257525141 has 4 divisors (see below), whose sum is σ = 263806284. Its totient is φ = 251244000.

The previous prime is 257525123. The next prime is 257525159. The reversal of 257525141 is 141525752.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (257525123) and next prime (257525159).

It can be written as a sum of positive squares in 2 ways, for example, as 137710225 + 119814916 = 11735^2 + 10946^2 .

It is a cyclic number.

It is not a de Polignac number, because 257525141 - 2⁶ = 257525077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257525098 and 257525107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257525041) 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, 3140510 + ... + 3140591.

It is an arithmetic number, because the mean of its divisors is an integer number (65951571).

Almost surely, 2^257525141 is an apocalyptic number.

It is an amenable number.

257525141 is a deficient number, since it is larger than the sum of its proper divisors (6281143).

257525141 is an equidigital number, since it uses as much as digits as its factorization.

257525141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6281142.

The product of its digits is 14000, while the sum is 32.

The square root of 257525141 is about 16047.5898813498. The cubic root of 257525141 is about 636.2188679165.

The spelling of 257525141 in words is "two hundred fifty-seven million, five hundred twenty-five thousand, one hundred forty-one".