425500000 has 168 divisors, whose sum is σ = 1122173136. Its totient is φ = 158400000.

The previous prime is 425499983. The next prime is 425500013. The reversal of 425500000 is 5524.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 11499982 + ... + 11500018.

It is an arithmetic number, because the mean of its divisors is an integer number (6679602).

Almost surely, 2^425500000 is an apocalyptic number.

425500000 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 425500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (561086568).

425500000 is an abundant number, since it is smaller than the sum of its proper divisors (696673136).

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

425500000 is an frugal number, since it uses more digits than its factorization.

425500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 425500000 is about 20627.6513447363. The cubic root of 425500000 is about 752.1420246313.

Adding to 425500000 its reverse (5524), we get a palindrome (425505524).

The spelling of 425500000 in words is "four hundred twenty-five million, five hundred thousand".