257875485654 has 32 divisors (see below), whose sum is σ = 533649312000. Its totient is φ = 82976703264.

The previous prime is 257875485649. The next prime is 257875485661. The reversal of 257875485654 is 456584578752.

257875485654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×257875485654² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 672357 + ... + 983775.

It is an arithmetic number, because the mean of its divisors is an integer number (16676541000).

Almost surely, 2^257875485654 is an apocalyptic number.

257875485654 is an abundant number, since it is smaller than the sum of its proper divisors (275773826346).

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

257875485654 is a wasteful number, since it uses less digits than its factorization.

257875485654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316212.

The product of its digits is 376320000, while the sum is 66.

The spelling of 257875485654 in words is "two hundred fifty-seven billion, eight hundred seventy-five million, four hundred eighty-five thousand, six hundred fifty-four".