425478238857 has 32 divisors (see below), whose sum is σ = 739856352000. Its totient is φ = 236559325824.

The previous prime is 425478238817. The next prime is 425478238879. The reversal of 425478238857 is 758832874524.

425478238857 is a `hidden beast` number, since 4 + 2 + 547 + 8 + 2 + 3 + 8 + 85 + 7 = 666.

It is not a de Polignac number, because 425478238857 - 2⁶ = 425478238793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 425478238794 and 425478238803.

It is not an unprimeable number, because it can be changed into a prime (425478238817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30414732 + ... + 30428717.

It is an arithmetic number, because the mean of its divisors is an integer number (23120511000).

Almost surely, 2^425478238857 is an apocalyptic number.

It is an amenable number.

425478238857 is a deficient number, since it is larger than the sum of its proper divisors (314378113143).

425478238857 is a wasteful number, since it uses less digits than its factorization.

425478238857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60843502 (or 60843496 counting only the distinct ones).

The product of its digits is 120422400, while the sum is 63.

The spelling of 425478238857 in words is "four hundred twenty-five billion, four hundred seventy-eight million, two hundred thirty-eight thousand, eight hundred fifty-seven".