1377725 has 6 divisors (see below), whose sum is σ = 1708410. Its totient is φ = 1102160.

The previous prime is 1377713. The next prime is 1377737. The reversal of 1377725 is 5277731.

It is an interprime number because it is at equal distance from previous prime (1377713) and next prime (1377737).

It can be written as a sum of positive squares in 3 ways, for example, as 252004 + 1125721 = 502^2 + 1061^2 .

It is not a de Polignac number, because 1377725 - 2⁸ = 1377469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1377691 and 1377700.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 27530 + ... + 27579.

It is an arithmetic number, because the mean of its divisors is an integer number (284735).

2^1377725 is an apocalyptic number.

It is an amenable number.

1377725 is a deficient number, since it is larger than the sum of its proper divisors (330685).

1377725 is an equidigital number, since it uses as much as digits as its factorization.

1377725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55119 (or 55114 counting only the distinct ones).

The product of its digits is 10290, while the sum is 32.

The square root of 1377725 is about 1173.7653087394. The cubic root of 1377725 is about 111.2724147909.

The spelling of 1377725 in words is "one million, three hundred seventy-seven thousand, seven hundred twenty-five".