257575351489 has 2 divisors, whose sum is σ = 257575351490. Its totient is φ = 257575351488.

The previous prime is 257575351483. The next prime is 257575351499. The reversal of 257575351489 is 984153575752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211753667889 + 45821683600 = 460167^2 + 214060^2 .

It is a cyclic number.

It is not a de Polignac number, because 257575351489 - 2²⁵ = 257541797057 is a prime.

It is not a weakly prime, because it can be changed into another prime (257575351483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128787675744 + 128787675745.

It is an arithmetic number, because the mean of its divisors is an integer number (128787675745).

Almost surely, 2^257575351489 is an apocalyptic number.

It is an amenable number.

257575351489 is a deficient number, since it is larger than the sum of its proper divisors (1).

257575351489 is an equidigital number, since it uses as much as digits as its factorization.

257575351489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920000, while the sum is 61.

The spelling of 257575351489 in words is "two hundred fifty-seven billion, five hundred seventy-five million, three hundred fifty-one thousand, four hundred eighty-nine".