1425408 has 60 divisors (see below), whose sum is σ = 3932040. Its totient is φ = 458752.

The previous prime is 1425371. The next prime is 1425427. The reversal of 1425408 is 8045241.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49138 + ... + 49166.

It is an arithmetic number, because the mean of its divisors is an integer number (65534).

2^1425408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1425408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1966020).

1425408 is an abundant number, since it is smaller than the sum of its proper divisors (2506632).

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

1425408 is an frugal number, since it uses more digits than its factorization.

1425408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 34 counting only the distinct ones).

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

The square root of 1425408 is about 1193.9045187954. The cubic root of 1425408 is about 112.5415944960.

The spelling of 1425408 in words is "one million, four hundred twenty-five thousand, four hundred eight".