257122650450 has 48 divisors (see below), whose sum is σ = 637842300480. Its totient is φ = 68546886720.

The previous prime is 257122650431. The next prime is 257122650467. The reversal of 257122650450 is 54056221752.

It is a super-2 number, since 2×257122650450² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257122650399 and 257122650408.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303436 + ... + 778664.

It is an arithmetic number, because the mean of its divisors is an integer number (13288381260).

Almost surely, 2^257122650450 is an apocalyptic number.

257122650450 is an abundant number, since it is smaller than the sum of its proper divisors (380719650030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257122650450 is a wasteful number, since it uses less digits than its factorization.

257122650450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478851 (or 478846 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 39.

The spelling of 257122650450 in words is "two hundred fifty-seven billion, one hundred twenty-two million, six hundred fifty thousand, four hundred fifty".