257615240122 has 16 divisors (see below), whose sum is σ = 403305949440. Its totient is φ = 123182204112.

The previous prime is 257615240119. The next prime is 257615240149. The reversal of 257615240122 is 221042516752.

It is a super-2 number, since 2×257615240122² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 340722 + ... + 794557.

It is an arithmetic number, because the mean of its divisors is an integer number (25206621840).

Almost surely, 2^257615240122 is an apocalyptic number.

257615240122 is a deficient number, since it is larger than the sum of its proper divisors (145690709318).

257615240122 is a wasteful number, since it uses less digits than its factorization.

257615240122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140237.

The product of its (nonzero) digits is 67200, while the sum is 37.

Adding to 257615240122 its reverse (221042516752), we get a palindrome (478657756874).

The spelling of 257615240122 in words is "two hundred fifty-seven billion, six hundred fifteen million, two hundred forty thousand, one hundred twenty-two".