1825404 has 48 divisors (see below), whose sum is σ = 5031936. Its totient is φ = 504000.

The previous prime is 1825403. The next prime is 1825429. The reversal of 1825404 is 4045281.

1825404 = T₂₁₁ + T₂₁₂ + ... + T₂₇₂.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1825403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2254 + ... + 2954.

It is an arithmetic number, because the mean of its divisors is an integer number (104832).

2^1825404 is an apocalyptic number.

1825404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1825404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2515968).

1825404 is an abundant number, since it is smaller than the sum of its proper divisors (3206532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1825404 is a wasteful number, since it uses less digits than its factorization.

1825404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1825404 is about 1351.0751274448. The cubic root of 1825404 is about 122.2136362502.

The spelling of 1825404 in words is "one million, eight hundred twenty-five thousand, four hundred four".