257245526367 has 6 divisors (see below), whose sum is σ = 371576871432. Its totient is φ = 171497017572.

The previous prime is 257245526357. The next prime is 257245526383. The reversal of 257245526367 is 763625542752.

257245526367 is a `hidden beast` number, since 2 + 5 + 7 + 24 + 552 + 6 + 3 + 67 = 666.

It is not a de Polignac number, because 257245526367 - 2¹⁶ = 257245460831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257245526357) 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 5 ways as a sum of consecutive naturals, for example, 14291418123 + ... + 14291418140.

It is an arithmetic number, because the mean of its divisors is an integer number (61929478572).

Almost surely, 2^257245526367 is an apocalyptic number.

257245526367 is a deficient number, since it is larger than the sum of its proper divisors (114331345065).

257245526367 is a wasteful number, since it uses less digits than its factorization.

257245526367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28582836269 (or 28582836266 counting only the distinct ones).

The product of its digits is 21168000, while the sum is 54.

The spelling of 257245526367 in words is "two hundred fifty-seven billion, two hundred forty-five million, five hundred twenty-six thousand, three hundred sixty-seven".