425522500 has 60 divisors (see below), whose sum is σ = 1002188572. Its totient is φ = 157104000.

The previous prime is 425522497. The next prime is 425522509. The reversal of 425522500 is 5225524.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 312653124 + 112869376 = 17682^2 + 10624^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (425522509) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25954 + ... + 39046.

Almost surely, 2^425522500 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 425522500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501094286).

425522500 is an abundant number, since it is smaller than the sum of its proper divisors (576666072).

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

425522500 is a wasteful number, since it uses less digits than its factorization.

425522500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13130 (or 13113 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 425522500 is about 20628.1967219629. The cubic root of 425522500 is about 752.1552818952.

The spelling of 425522500 in words is "four hundred twenty-five million, five hundred twenty-two thousand, five hundred".