263425857 has 8 divisors (see below), whose sum is σ = 352094880. Its totient is φ = 175187040.

The previous prime is 263425819. The next prime is 263425873. The reversal of 263425857 is 758524362.

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

It is not a de Polignac number, because 263425857 - 2¹⁵ = 263393089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263425457) 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, 106119 + ... + 108572.

It is an arithmetic number, because the mean of its divisors is an integer number (44011860).

Almost surely, 2^263425857 is an apocalyptic number.

It is an amenable number.

263425857 is a deficient number, since it is larger than the sum of its proper divisors (88669023).

263425857 is a wasteful number, since it uses less digits than its factorization.

263425857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215103.

The product of its digits is 403200, while the sum is 42.

The square root of 263425857 is about 16230.3991632985. The cubic root of 263425857 is about 641.0414821574.

The spelling of 263425857 in words is "two hundred sixty-three million, four hundred twenty-five thousand, eight hundred fifty-seven".