1025540 has 24 divisors (see below), whose sum is σ = 2201472. Its totient is φ = 401120.

The previous prime is 1025537. The next prime is 1025543. The reversal of 1025540 is 455201.

It is an interprime number because it is at equal distance from previous prime (1025537) and next prime (1025543).

It is not an unprimeable number, because it can be changed into a prime (1025543) 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, 395 + ... + 1485.

It is an arithmetic number, because the mean of its divisors is an integer number (91728).

2^1025540 is an apocalyptic number.

1025540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025540 is an abundant number, since it is smaller than the sum of its proper divisors (1175932).

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

1025540 is a wasteful number, since it uses less digits than its factorization.

1025540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1025540 is about 1012.6894884415. The cubic root of 1025540 is about 100.8441867667.

The spelling of 1025540 in words is "one million, twenty-five thousand, five hundred forty".