406625000 has 56 divisors (see below), whose sum is σ = 953308110. Its totient is φ = 162600000.

The previous prime is 406624993. The next prime is 406625017. The reversal of 406625000 is 526604.

It can be written as a sum of positive squares in 7 ways, for example, as 80389156 + 326235844 = 8966^2 + 18062^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 123374 + ... + 126626.

Almost surely, 2^406625000 is an apocalyptic number.

406625000 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 406625000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476654055).

406625000 is an abundant number, since it is smaller than the sum of its proper divisors (546683110).

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

406625000 is an frugal number, since it uses more digits than its factorization.

406625000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289 (or 3260 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 406625000 is about 20164.9448300758. The cubic root of 406625000 is about 740.8518313325.

The spelling of 406625000 in words is "four hundred six million, six hundred twenty-five thousand".