225920142 has 24 divisors (see below), whose sum is σ = 559421616. Its totient is φ = 64548576.

The previous prime is 225920137. The next prime is 225920153. The reversal of 225920142 is 241029522.

It is a happy number.

It is a super-2 number, since 2×225920142² = 102079821122600328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 896383 + ... + 896634.

It is an arithmetic number, because the mean of its divisors is an integer number (23309234).

Almost surely, 2^225920142 is an apocalyptic number.

225920142 is an abundant number, since it is smaller than the sum of its proper divisors (333501474).

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

225920142 is a wasteful number, since it uses less digits than its factorization.

225920142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793032 (or 1793029 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 225920142 is about 15030.6401061299. The cubic root of 225920142 is about 609.0481814550.

Adding to 225920142 its reverse (241029522), we get a palindrome (466949664).

The spelling of 225920142 in words is "two hundred twenty-five million, nine hundred twenty thousand, one hundred forty-two".