1025620 has 24 divisors (see below), whose sum is σ = 2268000. Its totient is φ = 388512.

The previous prime is 1025611. The next prime is 1025621. The reversal of 1025620 is 265201.

It is a happy number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1025594 and 1025603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970 + ... + 1729.

It is an arithmetic number, because the mean of its divisors is an integer number (94500).

2^1025620 is an apocalyptic number.

1025620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025620 is an abundant number, since it is smaller than the sum of its proper divisors (1242380).

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

1025620 is a wasteful number, since it uses less digits than its factorization.

1025620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727 (or 2725 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1025620 is about 1012.7289864520. The cubic root of 1025620 is about 100.8468089056.

It can be divided in two parts, 10256 and 20, that multiplied together give a triangular number (205120 = T₆₄₀).

The spelling of 1025620 in words is "one million, twenty-five thousand, six hundred twenty".