257422203507 has 32 divisors (see below), whose sum is σ = 393071196672. Its totient is φ = 146795410944.

The previous prime is 257422203499. The next prime is 257422203517. The reversal of 257422203507 is 705302224752.

It is not a de Polignac number, because 257422203507 - 2³ = 257422203499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257422203517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24682828 + ... + 24693254.

It is an arithmetic number, because the mean of its divisors is an integer number (12283474896).

Almost surely, 2^257422203507 is an apocalyptic number.

257422203507 is a deficient number, since it is larger than the sum of its proper divisors (135648993165).

257422203507 is a wasteful number, since it uses less digits than its factorization.

257422203507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12747.

The product of its (nonzero) digits is 235200, while the sum is 39.

The spelling of 257422203507 in words is "two hundred fifty-seven billion, four hundred twenty-two million, two hundred three thousand, five hundred seven".