225402740 has 24 divisors (see below), whose sum is σ = 480413472. Its totient is φ = 88814880.

The previous prime is 225402713. The next prime is 225402743. The reversal of 225402740 is 47204522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225402743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82766 + ... + 85445.

It is an arithmetic number, because the mean of its divisors is an integer number (20017228).

Almost surely, 2^225402740 is an apocalyptic number.

225402740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225402740 is an abundant number, since it is smaller than the sum of its proper divisors (255010732).

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

225402740 is a wasteful number, since it uses less digits than its factorization.

225402740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168287 (or 168285 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 225402740 is about 15013.4186646480. The cubic root of 225402740 is about 608.5828789584.

The spelling of 225402740 in words is "two hundred twenty-five million, four hundred two thousand, seven hundred forty".