425538834 has 80 divisors (see below), whose sum is σ = 1005671040. Its totient is φ = 120022560.

The previous prime is 425538833. The next prime is 425538853. The reversal of 425538834 is 438835524.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (425538833) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1570119 + ... + 1570389.

It is an arithmetic number, because the mean of its divisors is an integer number (12570888).

Almost surely, 2^425538834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425538834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502835520).

425538834 is an abundant number, since it is smaller than the sum of its proper divisors (580132206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425538834 is a wasteful number, since it uses less digits than its factorization.

425538834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 392 counting only the distinct ones).

The product of its digits is 460800, while the sum is 42.

The square root of 425538834 is about 20628.5926325574. The cubic root of 425538834 is about 752.1649057867.

The spelling of 425538834 in words is "four hundred twenty-five million, five hundred thirty-eight thousand, eight hundred thirty-four".