425065520 has 80 divisors (see below), whose sum is σ = 1081671840. Its totient is φ = 154060800.

The previous prime is 425065517. The next prime is 425065523. The reversal of 425065520 is 25560524.

It is an interprime number because it is at equal distance from previous prime (425065517) and next prime (425065523).

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (425065523) 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, 359330 + ... + 360510.

It is an arithmetic number, because the mean of its divisors is an integer number (13520898).

Almost surely, 2^425065520 is an apocalyptic number.

425065520 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 425065520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540835920).

425065520 is an abundant number, since it is smaller than the sum of its proper divisors (656606320).

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

425065520 is a wasteful number, since it uses less digits than its factorization.

425065520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614 (or 1608 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 425065520 is about 20617.1171602627. The cubic root of 425065520 is about 751.8859322231.

The spelling of 425065520 in words is "four hundred twenty-five million, sixty-five thousand, five hundred twenty".