225421742 has 32 divisors (see below), whose sum is σ = 416973312. Its totient is φ = 89004384.

The previous prime is 225421741. The next prime is 225421747. The reversal of 225421742 is 247124522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225421741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134393 + ... + 136059.

It is an arithmetic number, because the mean of its divisors is an integer number (13030416).

Almost surely, 2^225421742 is an apocalyptic number.

225421742 is a deficient number, since it is larger than the sum of its proper divisors (191551570).

225421742 is a wasteful number, since it uses less digits than its factorization.

225421742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432.

The product of its digits is 8960, while the sum is 29.

The square root of 225421742 is about 15014.0514851921. The cubic root of 225421742 is about 608.5999801509.

The spelling of 225421742 in words is "two hundred twenty-five million, four hundred twenty-one thousand, seven hundred forty-two".