1916025 has 24 divisors (see below), whose sum is σ = 3228960. Its totient is φ = 1002240.

The previous prime is 1916023. The next prime is 1916027. The reversal of 1916025 is 5206191.

It is an interprime number because it is at equal distance from previous prime (1916023) and next prime (1916027).

It is not a de Polignac number, because 1916025 - 2¹ = 1916023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1915986 and 1916004.

It is not an unprimeable number, because it can be changed into a prime (1916021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4209 + ... + 4641.

It is an arithmetic number, because the mean of its divisors is an integer number (134540).

2^1916025 is an apocalyptic number.

1916025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1916025 is a deficient number, since it is larger than the sum of its proper divisors (1312935).

1916025 is a wasteful number, since it uses less digits than its factorization.

1916025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1916025 is about 1384.2055483200. The cubic root of 1916025 is about 124.2034684140.

It can be divided in two parts, 191 and 6025, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 1916025 in words is "one million, nine hundred sixteen thousand, twenty-five".