1025480 has 32 divisors (see below), whose sum is σ = 2384640. Its totient is φ = 396480.

The previous prime is 1025477. The next prime is 1025483. The reversal of 1025480 is 845201.

1025480 = T₃₅₀ + T₃₅₁ + ... + T₃₆₅.

1025480 is nontrivially palindromic in base 7.

It is an interprime number because it is at equal distance from previous prime (1025477) and next prime (1025483).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1025483) 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, 827 + ... + 1653.

It is an arithmetic number, because the mean of its divisors is an integer number (74520).

2^1025480 is an apocalyptic number.

1025480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1025480 is the 827-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1192320).

1025480 is an abundant number, since it is smaller than the sum of its proper divisors (1359160).

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

1025480 is a wasteful number, since it uses less digits than its factorization.

1025480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1025480 is about 1012.6598639227. The cubic root of 1025480 is about 100.8422200730.

The spelling of 1025480 in words is "one million, twenty-five thousand, four hundred eighty".