257257354470 has 16 divisors (see below), whose sum is σ = 617417650800. Its totient is φ = 68601961184.

The previous prime is 257257354429. The next prime is 257257354483. The reversal of 257257354470 is 74453752752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4287622545 + ... + 4287622604.

It is an arithmetic number, because the mean of its divisors is an integer number (38588603175).

Almost surely, 2^257257354470 is an apocalyptic number.

257257354470 is an abundant number, since it is smaller than the sum of its proper divisors (360160296330).

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

257257354470 is a wasteful number, since it uses less digits than its factorization.

257257354470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8575245159.

The product of its (nonzero) digits is 8232000, while the sum is 51.

The spelling of 257257354470 in words is "two hundred fifty-seven billion, two hundred fifty-seven million, three hundred fifty-four thousand, four hundred seventy".