225943400 has 24 divisors (see below), whose sum is σ = 525318870. Its totient is φ = 90377280.

The previous prime is 225943373. The next prime is 225943427. The reversal of 225943400 is 4349522.

It is an interprime number because it is at equal distance from previous prime (225943373) and next prime (225943427).

It can be written as a sum of positive squares in 3 ways, for example, as 139192804 + 86750596 = 11798^2 + 9314^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 564659 + ... + 565058.

Almost surely, 2^225943400 is an apocalyptic number.

225943400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225943400 is an abundant number, since it is smaller than the sum of its proper divisors (299375470).

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

225943400 is a wasteful number, since it uses less digits than its factorization.

225943400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129733 (or 1129724 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 225943400 is about 15031.4137724966. The cubic root of 225943400 is about 609.0690808111.

The spelling of 225943400 in words is "two hundred twenty-five million, nine hundred forty-three thousand, four hundred".