1330725 has 24 divisors (see below), whose sum is σ = 2401632. Its totient is φ = 644800.

The previous prime is 1330699. The next prime is 1330727. The reversal of 1330725 is 5270331.

1330725 = 138² + 139² + ... + 187².

It is a happy number.

It is not a de Polignac number, because 1330725 - 2⁹ = 1330213 is a prime.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19 + ... + 1631.

It is an arithmetic number, because the mean of its divisors is an integer number (100068).

2^1330725 is an apocalyptic number.

1330725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1330725 is a deficient number, since it is larger than the sum of its proper divisors (1070907).

1330725 is a wasteful number, since it uses less digits than its factorization.

1330725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637 (or 1632 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 1330725 is about 1153.5705440067. The cubic root of 1330725 is about 109.9924237206.

The spelling of 1330725 in words is "one million, three hundred thirty thousand, seven hundred twenty-five".