101440225 has 24 divisors (see below), whose sum is σ = 129634560. Its totient is φ = 78697920.

The previous prime is 101440201. The next prime is 101440253. The reversal of 101440225 is 522044101.

It is not a de Polignac number, because 101440225 - 2¹¹ = 101438177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211536 + ... + 212014.

It is an arithmetic number, because the mean of its divisors is an integer number (5401440).

Almost surely, 2^101440225 is an apocalyptic number.

It is an amenable number.

101440225 is a deficient number, since it is larger than the sum of its proper divisors (28194335).

101440225 is a wasteful number, since it uses less digits than its factorization.

101440225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 101440225 is about 10071.7538194696. The cubic root of 101440225 is about 466.3765813383.

Adding to 101440225 its reverse (522044101), we get a palindrome (623484326).

The spelling of 101440225 in words is "one hundred one million, four hundred forty thousand, two hundred twenty-five".