1025646 has 16 divisors (see below), whose sum is σ = 2064000. Its totient is φ = 339768.

The previous prime is 1025641. The next prime is 1025653. The reversal of 1025646 is 6465201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (129000).

2^1025646 is an apocalyptic number.

1025646 is an abundant number, since it is smaller than the sum of its proper divisors (1038354).

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

1025646 is a wasteful number, since it uses less digits than its factorization.

1025646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1025646 is about 1012.7418229737. The cubic root of 1025646 is about 100.8476610714.

The spelling of 1025646 in words is "one million, twenty-five thousand, six hundred forty-six".