257423257230 has 32 divisors (see below), whose sum is σ = 632884498848. Its totient is φ = 66971904000.

The previous prime is 257423257153. The next prime is 257423257249. The reversal of 257423257230 is 32752324752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104642371 + ... + 104644830.

It is an arithmetic number, because the mean of its divisors is an integer number (19777640589).

Almost surely, 2^257423257230 is an apocalyptic number.

257423257230 is an abundant number, since it is smaller than the sum of its proper divisors (375461241618).

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

257423257230 is a wasteful number, since it uses less digits than its factorization.

257423257230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209287252.

The product of its (nonzero) digits is 705600, while the sum is 42.

The spelling of 257423257230 in words is "two hundred fifty-seven billion, four hundred twenty-three million, two hundred fifty-seven thousand, two hundred thirty".