257025479480 has 64 divisors (see below), whose sum is σ = 721006548480. Its totient is φ = 80111836800.

The previous prime is 257025479479. The next prime is 257025479483. The reversal of 257025479480 is 84974520752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257025479483) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 41721836 + ... + 41727995.

It is an arithmetic number, because the mean of its divisors is an integer number (11265727320).

Almost surely, 2^257025479480 is an apocalyptic number.

257025479480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257025479480 is an abundant number, since it is smaller than the sum of its proper divisors (463981069000).

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

257025479480 is a wasteful number, since it uses less digits than its factorization.

257025479480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83449860 (or 83449856 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 257025479480 in words is "two hundred fifty-seven billion, twenty-five million, four hundred seventy-nine thousand, four hundred eighty".