257015035957 has 2 divisors, whose sum is σ = 257015035958. Its totient is φ = 257015035956.

The previous prime is 257015035943. The next prime is 257015035961. The reversal of 257015035957 is 759530510752.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224335796881 + 32679239076 = 473641^2 + 180774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257015035957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257015035957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257015035997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128507517978 + 128507517979.

It is an arithmetic number, because the mean of its divisors is an integer number (128507517979).

Almost surely, 2^257015035957 is an apocalyptic number.

It is an amenable number.

257015035957 is a deficient number, since it is larger than the sum of its proper divisors (1).

257015035957 is an equidigital number, since it uses as much as digits as its factorization.

257015035957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1653750, while the sum is 49.

The spelling of 257015035957 in words is "two hundred fifty-seven billion, fifteen million, thirty-five thousand, nine hundred fifty-seven".