257150521450 has 24 divisors (see below), whose sum is σ = 478334925900. Its totient is φ = 102852691200.

The previous prime is 257150521447. The next prime is 257150521457. The reversal of 257150521450 is 54125051752.

It can be written as a sum of positive squares in 6 ways, for example, as 173521400481 + 83629120969 = 416559^2 + 289187^2 .

It is a super-2 number, since 2×257150521450² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257150521457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 530226 + ... + 891874.

Almost surely, 2^257150521450 is an apocalyptic number.

257150521450 is a deficient number, since it is larger than the sum of its proper divisors (221184404450).

257150521450 is a wasteful number, since it uses less digits than its factorization.

257150521450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375882 (or 375877 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 37.

The spelling of 257150521450 in words is "two hundred fifty-seven billion, one hundred fifty million, five hundred twenty-one thousand, four hundred fifty".