1025604 has 36 divisors (see below), whose sum is σ = 2679040. Its totient is φ = 330480.

The previous prime is 1025579. The next prime is 1025611. The reversal of 1025604 is 4065201.

It is a happy number.

1025604 is a `hidden beast` number, since 102 + 560 + 4 = 666.

1025604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 16.

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, 657 + ... + 1575.

2^1025604 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 1025604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1339520).

1025604 is an abundant number, since it is smaller than the sum of its proper divisors (1653436).

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

1025604 is a wasteful number, since it uses less digits than its factorization.

1025604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1025604 is about 1012.7210869731. The cubic root of 1025604 is about 100.8462844887.

The spelling of 1025604 in words is "one million, twenty-five thousand, six hundred four".