1625860 has 12 divisors (see below), whose sum is σ = 3414348. Its totient is φ = 650336.

The previous prime is 1625851. The next prime is 1625861. The reversal of 1625860 is 685261.

It can be written as a sum of positive squares in 2 ways, for example, as 407044 + 1218816 = 638^2 + 1104^2 .

It is not an unprimeable number, because it can be changed into a prime (1625861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40627 + ... + 40666.

It is an arithmetic number, because the mean of its divisors is an integer number (284529).

2^1625860 is an apocalyptic number.

1625860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1625860 is an abundant number, since it is smaller than the sum of its proper divisors (1788488).

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

1625860 is a wasteful number, since it uses less digits than its factorization.

1625860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81302 (or 81300 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1625860 is about 1275.0921535324. The cubic root of 1625860 is about 117.5874707061.

It can be divided in two parts, 1625 and 860, that added together give a triangular number (2485 = T₇₀).

The spelling of 1625860 in words is "one million, six hundred twenty-five thousand, eight hundred sixty".