1380225 has 48 divisors (see below), whose sum is σ = 2856960. Its totient is φ = 571200.

The previous prime is 1380221. The next prime is 1380227. The reversal of 1380225 is 5220831.

It is not a de Polignac number, because 1380225 - 2² = 1380221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1380221) 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, 5656 + ... + 5894.

It is an arithmetic number, because the mean of its divisors is an integer number (59520).

2^1380225 is an apocalyptic number.

1380225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1380225 is an abundant number, since it is smaller than the sum of its proper divisors (1476735).

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

1380225 is a wasteful number, since it uses less digits than its factorization.

1380225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1380225 is about 1174.8297749036. The cubic root of 1380225 is about 111.3396785639.

Subtracting 1380225 from its reverse (5220831), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 1380225 in words is "one million, three hundred eighty thousand, two hundred twenty-five".