257114520 has 128 divisors (see below), whose sum is σ = 923025600. Its totient is φ = 63286272.

The previous prime is 257114509. The next prime is 257114521. The reversal of 257114520 is 25411752.

257114520 is a `hidden beast` number, since 25 + 7 + 114 + 520 = 666.

It is a super-2 number, since 2×257114520² = 132215752789660800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257114521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4884 + ... + 23196.

Almost surely, 2^257114520 is an apocalyptic number.

257114520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 257114520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461512800).

257114520 is an abundant number, since it is smaller than the sum of its proper divisors (665911080).

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

257114520 is a wasteful number, since it uses less digits than its factorization.

257114520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18346 (or 18336 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 257114520 is about 16034.7909247361. The cubic root of 257114520 is about 635.8805400410.

The spelling of 257114520 in words is "two hundred fifty-seven million, one hundred fourteen thousand, five hundred twenty".