425534520 has 128 divisors (see below), whose sum is σ = 1336688640. Its totient is φ = 108241920.

The previous prime is 425534471. The next prime is 425534539. The reversal of 425534520 is 25435524.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270777 + ... + 272343.

It is an arithmetic number, because the mean of its divisors is an integer number (10442880).

Almost surely, 2^425534520 is an apocalyptic number.

425534520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425534520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (668344320).

425534520 is an abundant number, since it is smaller than the sum of its proper divisors (911154120).

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

425534520 is a wasteful number, since it uses less digits than its factorization.

425534520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685 (or 1681 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 425534520 is about 20628.4880686879. The cubic root of 425534520 is about 752.1623640286.

The spelling of 425534520 in words is "four hundred twenty-five million, five hundred thirty-four thousand, five hundred twenty".