1025020 has 24 divisors (see below), whose sum is σ = 2195424. Its totient is φ = 401856.

The previous prime is 1025009. The next prime is 1025021. The reversal of 1025020 is 205201.

It is a Harshad number since it is a multiple of its sum of digits (10).

1025020 is a Rhonda number in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 1024988 and 1025006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025021) 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, 577 + ... + 1543.

It is an arithmetic number, because the mean of its divisors is an integer number (91476).

2^1025020 is an apocalyptic number.

1025020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025020 is an abundant number, since it is smaller than the sum of its proper divisors (1170404).

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

1025020 is a wasteful number, since it uses less digits than its factorization.

1025020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029 (or 1027 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 1025020 is about 1012.4327138136. The cubic root of 1025020 is about 100.8271395386.

The spelling of 1025020 in words is "one million, twenty-five thousand, twenty".