1371225 has 24 divisors (see below), whose sum is σ = 2321280. Its totient is φ = 713920.

The previous prime is 1371217. The next prime is 1371229. The reversal of 1371225 is 5221731.

It is not a de Polignac number, because 1371225 - 2³ = 1371217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1371229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3331 + ... + 3719.

It is an arithmetic number, because the mean of its divisors is an integer number (96720).

2^1371225 is an apocalyptic number.

1371225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1371225 is a deficient number, since it is larger than the sum of its proper divisors (950055).

1371225 is a wasteful number, since it uses less digits than its factorization.

1371225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 444 counting only the distinct ones).

The product of its digits is 420, while the sum is 21.

The square root of 1371225 is about 1170.9931682124. The cubic root of 1371225 is about 111.0971473193.

Adding to 1371225 its reverse (5221731), we get a palindrome (6592956).

It can be divided in two parts, 1371 and 225, that added together give a triangular number (1596 = T₅₆).

The spelling of 1371225 in words is "one million, three hundred seventy-one thousand, two hundred twenty-five".