103720225 has 48 divisors (see below), whose sum is σ = 155918592. Its totient is φ = 66908160.

The previous prime is 103720223. The next prime is 103720229. The reversal of 103720225 is 522027301.

It is not a de Polignac number, because 103720225 - 2¹ = 103720223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103720196 and 103720205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103720223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 293649 + ... + 294001.

It is an arithmetic number, because the mean of its divisors is an integer number (3248304).

Almost surely, 2^103720225 is an apocalyptic number.

It is an amenable number.

103720225 is a deficient number, since it is larger than the sum of its proper divisors (52198367).

103720225 is a wasteful number, since it uses less digits than its factorization.

103720225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 103720225 is about 10184.3126915860. The cubic root of 103720225 is about 469.8448635413.

Adding to 103720225 its reverse (522027301), we get a palindrome (625747526).

The spelling of 103720225 in words is "one hundred three million, seven hundred twenty thousand, two hundred twenty-five".