1025644 has 12 divisors (see below), whose sum is σ = 1900584. Its totient is φ = 482624.

The previous prime is 1025641. The next prime is 1025653. The reversal of 1025644 is 4465201.

It is a super-2 number, since 2×1025644² = 2103891229472, which contains 22 as substring.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7474 + ... + 7609.

It is an arithmetic number, because the mean of its divisors is an integer number (158382).

2^1025644 is an apocalyptic number.

It is an amenable number.

1025644 is a deficient number, since it is larger than the sum of its proper divisors (874940).

1025644 is a wasteful number, since it uses less digits than its factorization.

1025644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15104 (or 15102 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1025644 is about 1012.7408355547. The cubic root of 1025644 is about 100.8475955207.

The spelling of 1025644 in words is "one million, twenty-five thousand, six hundred forty-four".