425320720 has 80 divisors (see below), whose sum is σ = 1089091008. Its totient is φ = 153182720.

The previous prime is 425320711. The next prime is 425320729. The reversal of 425320720 is 27023524.

It is an interprime number because it is at equal distance from previous prime (425320711) and next prime (425320729).

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

It is a super-2 number, since 2×425320720² = 361795429722636800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (425320729) 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, 91902 + ... + 96418.

Almost surely, 2^425320720 is an apocalyptic number.

425320720 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 425320720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (544545504).

425320720 is an abundant number, since it is smaller than the sum of its proper divisors (663770288).

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

425320720 is a wasteful number, since it uses less digits than its factorization.

425320720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648 (or 4642 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 425320720 is about 20623.3052637059. The cubic root of 425320720 is about 752.0363740516.

The spelling of 425320720 in words is "four hundred twenty-five million, three hundred twenty thousand, seven hundred twenty".