1851425 has 12 divisors (see below), whose sum is σ = 2321280. Its totient is φ = 1464720.

The previous prime is 1851407. The next prime is 1851433. The reversal of 1851425 is 5241581.

It is not a de Polignac number, because 1851425 - 2¹⁸ = 1589281 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1851394 and 1851403.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2216 + ... + 2934.

It is an arithmetic number, because the mean of its divisors is an integer number (193440).

2^1851425 is an apocalyptic number.

It is an amenable number.

1851425 is a deficient number, since it is larger than the sum of its proper divisors (469855).

1851425 is a wasteful number, since it uses less digits than its factorization.

1851425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832 (or 827 counting only the distinct ones).

The product of its digits is 1600, while the sum is 26.

The square root of 1851425 is about 1360.6707904559. The cubic root of 1851425 is about 122.7916140156.

The spelling of 1851425 in words is "one million, eight hundred fifty-one thousand, four hundred twenty-five".