1025616 has 40 divisors (see below), whose sum is σ = 2767680. Its totient is φ = 326656.

The previous prime is 1025611. The next prime is 1025621. The reversal of 1025616 is 6165201.

It is a happy number.

1025616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1025611) and next prime (1025621).

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1025592 and 1025601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640 + ... + 1568.

It is an arithmetic number, because the mean of its divisors is an integer number (69192).

2^1025616 is an apocalyptic number.

1025616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1383840).

1025616 is an abundant number, since it is smaller than the sum of its proper divisors (1742064).

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

1025616 is a wasteful number, since it uses less digits than its factorization.

1025616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963 (or 957 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1025616 is about 1012.7270115880. The cubic root of 1025616 is about 100.8466778019.

The spelling of 1025616 in words is "one million, twenty-five thousand, six hundred sixteen".