257525017088 has 20 divisors (see below), whose sum is σ = 514547056650. Its totient is φ = 128762508288.

The previous prime is 257525017069. The next prime is 257525017121. The reversal of 257525017088 is 880710525752.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 242804533504 + 14720483584 = 492752^2 + 121328^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251488763 + ... + 251489786.

Almost surely, 2^257525017088 is an apocalyptic number.

It is an amenable number.

257525017088 is a deficient number, since it is larger than the sum of its proper divisors (257022039562).

257525017088 is an frugal number, since it uses more digits than its factorization.

257525017088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502978567 (or 502978551 counting only the distinct ones).

The product of its (nonzero) digits is 1568000, while the sum is 50.

The spelling of 257525017088 in words is "two hundred fifty-seven billion, five hundred twenty-five million, seventeen thousand, eighty-eight".