1920425 has 24 divisors (see below), whose sum is σ = 2708160. Its totient is φ = 1339200.

The previous prime is 1920407. The next prime is 1920427. The reversal of 1920425 is 5240291.

It is not a de Polignac number, because 1920425 - 2⁶ = 1920361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1920425.

It is not an unprimeable number, because it can be changed into a prime (1920427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6020 + ... + 6330.

It is an arithmetic number, because the mean of its divisors is an integer number (112840).

2^1920425 is an apocalyptic number.

It is an amenable number.

1920425 is a deficient number, since it is larger than the sum of its proper divisors (787735).

1920425 is a wasteful number, since it uses less digits than its factorization.

1920425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1920425 is about 1385.7939962346. The cubic root of 1920425 is about 124.2984702131.

The spelling of 1920425 in words is "one million, nine hundred twenty thousand, four hundred twenty-five".