257005253082 has 8 divisors (see below), whose sum is σ = 514010506176. Its totient is φ = 85668417692.

The previous prime is 257005253053. The next prime is 257005253083. The reversal of 257005253082 is 280352500752.

It is a sphenic number, since it is the product of 3 distinct primes.

257005253082 is an admirable number.

It is a super-2 number, since 2×257005253082² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 257005253082.

It is not an unprimeable number, because it can be changed into a prime (257005253083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21417104418 + ... + 21417104429.

It is an arithmetic number, because the mean of its divisors is an integer number (64251313272).

Almost surely, 2^257005253082 is an apocalyptic number.

257005253082 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

257005253082 is a wasteful number, since it uses less digits than its factorization.

257005253082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42834208852.

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

The spelling of 257005253082 in words is "two hundred fifty-seven billion, five million, two hundred fifty-three thousand, eighty-two".