2169625 has 16 divisors (see below), whose sum is σ = 2869776. Its totient is φ = 1632000.

The previous prime is 2169619. The next prime is 2169631. The reversal of 2169625 is 5269612.

It is an interprime number because it is at equal distance from previous prime (2169619) and next prime (2169631).

It can be written as a sum of positive squares in 8 ways, for example, as 355216 + 1814409 = 596^2 + 1347^2 .

It is not a de Polignac number, because 2169625 - 2³ = 2169617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1615 + ... + 2635.

It is an arithmetic number, because the mean of its divisors is an integer number (179361).

2^2169625 is an apocalyptic number.

2169625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2169625 is a deficient number, since it is larger than the sum of its proper divisors (700151).

2169625 is a wasteful number, since it uses less digits than its factorization.

2169625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1043 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 2169625 is about 1472.9646974724. The cubic root of 2169625 is about 129.4578009322.

The spelling of 2169625 in words is "two million, one hundred sixty-nine thousand, six hundred twenty-five".