1625442 has 48 divisors (see below), whose sum is σ = 4040640. Its totient is φ = 426816.

The previous prime is 1625419. The next prime is 1625453. The reversal of 1625442 is 2445261.

It is a zygodrome in base 13.

It is a congruent number.

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, 6984 + ... + 7212.

It is an arithmetic number, because the mean of its divisors is an integer number (84180).

2^1625442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1625442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2020320).

1625442 is an abundant number, since it is smaller than the sum of its proper divisors (2415198).

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

1625442 is a wasteful number, since it uses less digits than its factorization.

1625442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 254 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 1625442 is about 1274.9282332743. The cubic root of 1625442 is about 117.5773928037.

The spelling of 1625442 in words is "one million, six hundred twenty-five thousand, four hundred forty-two".