425215839 has 16 divisors (see below), whose sum is σ = 598188800. Its totient is φ = 267929856.

The previous prime is 425215831. The next prime is 425215853. The reversal of 425215839 is 938512524.

It is not a de Polignac number, because 425215839 - 2³ = 425215831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425215797 and 425215806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425215831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16527 + ... + 33519.

It is an arithmetic number, because the mean of its divisors is an integer number (37386800).

Almost surely, 2^425215839 is an apocalyptic number.

425215839 is a deficient number, since it is larger than the sum of its proper divisors (172972961).

425215839 is a wasteful number, since it uses less digits than its factorization.

425215839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17454.

The product of its digits is 86400, while the sum is 39.

The square root of 425215839 is about 20620.7623282943. The cubic root of 425215839 is about 751.9745534009.

The spelling of 425215839 in words is "four hundred twenty-five million, two hundred fifteen thousand, eight hundred thirty-nine".