425872385 has 8 divisors (see below), whose sum is σ = 511823976. Its totient is φ = 340179840.

The previous prime is 425872367. The next prime is 425872411. The reversal of 425872385 is 583278524.

It can be written as a sum of positive squares in 4 ways, for example, as 150013504 + 275858881 = 12248^2 + 16609^2 .

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

It is not a de Polignac number, because 425872385 - 2¹⁰ = 425871361 is a prime.

It is a Duffinian 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, 61124 + ... + 67733.

It is an arithmetic number, because the mean of its divisors is an integer number (63977997).

Almost surely, 2^425872385 is an apocalyptic number.

It is an amenable number.

425872385 is a deficient number, since it is larger than the sum of its proper divisors (85951591).

425872385 is a wasteful number, since it uses less digits than its factorization.

425872385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129523.

The product of its digits is 537600, while the sum is 44.

The square root of 425872385 is about 20636.6757255135. The cubic root of 425872385 is about 752.3613781290.

The spelling of 425872385 in words is "four hundred twenty-five million, eight hundred seventy-two thousand, three hundred eighty-five".