257823232469 has 8 divisors (see below), whose sum is σ = 281302208640. Its totient is φ = 234351006400.

The previous prime is 257823232417. The next prime is 257823232487. The reversal of 257823232469 is 964232328752.

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

It is a cyclic number.

It is not a de Polignac number, because 257823232469 - 2²⁴ = 257806455253 is a prime.

It is a super-2 number, since 2×257823232469² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 257823232469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257823232769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1607492 + ... + 1760589.

It is an arithmetic number, because the mean of its divisors is an integer number (35162776080).

Almost surely, 2^257823232469 is an apocalyptic number.

It is an amenable number.

257823232469 is a deficient number, since it is larger than the sum of its proper divisors (23478976171).

257823232469 is a wasteful number, since it uses less digits than its factorization.

257823232469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375051.

The product of its digits is 8709120, while the sum is 53.

The spelling of 257823232469 in words is "two hundred fifty-seven billion, eight hundred twenty-three million, two hundred thirty-two thousand, four hundred sixty-nine".