425220500 has 48 divisors (see below), whose sum is σ = 930702864. Its totient is φ = 169718400.

The previous prime is 425220479. The next prime is 425220503. The reversal of 425220500 is 5022524.

It can be written as a sum of positive squares in 8 ways, for example, as 166203664 + 259016836 = 12892^2 + 16094^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425220503) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 426002 + ... + 426998.

It is an arithmetic number, because the mean of its divisors is an integer number (19389643).

Almost surely, 2^425220500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425220500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465351432).

425220500 is an abundant number, since it is smaller than the sum of its proper divisors (505482364).

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

425220500 is a wasteful number, since it uses less digits than its factorization.

425220500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869 (or 1857 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 425220500 is about 20620.8753451448. The cubic root of 425220500 is about 751.9773009785.

The spelling of 425220500 in words is "four hundred twenty-five million, two hundred twenty thousand, five hundred".