425501720 has 64 divisors (see below), whose sum is σ = 1100977920. Its totient is φ = 144975744.

The previous prime is 425501719. The next prime is 425501729. The reversal of 425501720 is 27105524.

It is a self number, because there is not a number n which added to its sum of digits gives 425501720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425501729) 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, 40979 + ... + 50301.

It is an arithmetic number, because the mean of its divisors is an integer number (17202780).

Almost surely, 2^425501720 is an apocalyptic number.

425501720 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 425501720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (550488960).

425501720 is an abundant number, since it is smaller than the sum of its proper divisors (675476200).

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

425501720 is a wasteful number, since it uses less digits than its factorization.

425501720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9504 (or 9500 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 425501720 is about 20627.6930363044. The cubic root of 425501720 is about 752.1430380920.

The spelling of 425501720 in words is "four hundred twenty-five million, five hundred one thousand, seven hundred twenty".