425781839 has 8 divisors (see below), whose sum is σ = 488012928. Its totient is φ = 363902040.

The previous prime is 425781823. The next prime is 425781841. The reversal of 425781839 is 938187524.

It is a happy number.

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 425781839 - 2⁴ = 425781823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425781793 and 425781802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425781899) 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, 85217 + ... + 90074.

It is an arithmetic number, because the mean of its divisors is an integer number (61001616).

Almost surely, 2^425781839 is an apocalyptic number.

425781839 is a deficient number, since it is larger than the sum of its proper divisors (62231089).

425781839 is a wasteful number, since it uses less digits than its factorization.

425781839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175645.

The product of its digits is 483840, while the sum is 47.

The square root of 425781839 is about 20634.4817962555. The cubic root of 425781839 is about 752.3080537496.

The spelling of 425781839 in words is "four hundred twenty-five million, seven hundred eighty-one thousand, eight hundred thirty-nine".