1865425 has 24 divisors (see below), whose sum is σ = 2499840. Its totient is φ = 1377600.

The previous prime is 1865419. The next prime is 1865431. The reversal of 1865425 is 5245681.

It is an interprime number because it is at equal distance from previous prime (1865419) and next prime (1865431).

It is not a de Polignac number, because 1865425 - 2³ = 1865417 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22434 + ... + 22516.

It is an arithmetic number, because the mean of its divisors is an integer number (104160).

2^1865425 is an apocalyptic number.

It is an amenable number.

1865425 is a deficient number, since it is larger than the sum of its proper divisors (634415).

1865425 is a wasteful number, since it uses less digits than its factorization.

1865425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 148 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 1865425 is about 1365.8056230665. The cubic root of 1865425 is about 123.1003433496.

The spelling of 1865425 in words is "one million, eight hundred sixty-five thousand, four hundred twenty-five".