1670525 has 6 divisors (see below), whose sum is σ = 2071482. Its totient is φ = 1336400.

The previous prime is 1670519. The next prime is 1670527. The reversal of 1670525 is 5250761.

1670525 = T₃₅₃ + T₃₅₄ + ... + T₃₇₇.

It can be written as a sum of positive squares in 3 ways, for example, as 3844 + 1666681 = 62^2 + 1291^2 .

It is not a de Polignac number, because 1670525 - 2⁸ = 1670269 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1670494 and 1670503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33386 + ... + 33435.

It is an arithmetic number, because the mean of its divisors is an integer number (345247).

2^1670525 is an apocalyptic number.

It is an amenable number.

1670525 is a deficient number, since it is larger than the sum of its proper divisors (400957).

1670525 is an equidigital number, since it uses as much as digits as its factorization.

1670525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66831 (or 66826 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 1670525 is about 1292.4879109686. The cubic root of 1670525 is about 118.6545308396.

The spelling of 1670525 in words is "one million, six hundred seventy thousand, five hundred twenty-five".