257752422 has 32 divisors (see below), whose sum is σ = 573406560. Its totient is φ = 85824000.

The previous prime is 257752403. The next prime is 257752427. The reversal of 257752422 is 224257752.

It is a super-2 number, since 2×257752422² = 132872622093732168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257752427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62422 + ... + 66422.

It is an arithmetic number, because the mean of its divisors is an integer number (17918955).

Almost surely, 2^257752422 is an apocalyptic number.

257752422 is an abundant number, since it is smaller than the sum of its proper divisors (315654138).

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

257752422 is a wasteful number, since it uses less digits than its factorization.

257752422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5205 (or 5199 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 257752422 is about 16054.6697879464. The cubic root of 257752422 is about 636.4059796698.

The spelling of 257752422 in words is "two hundred fifty-seven million, seven hundred fifty-two thousand, four hundred twenty-two".