2025540 has 144 divisors (see below), whose sum is σ = 7150080. Its totient is φ = 475200.

The previous prime is 2025539. The next prime is 2025553. The reversal of 2025540 is 455202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65325 + ... + 65355.

2^2025540 is an apocalyptic number.

2025540 is a gapful number since it is divisible by the number (20) 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 2025540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3575040).

2025540 is an abundant number, since it is smaller than the sum of its proper divisors (5124540).

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

2025540 is a wasteful number, since it uses less digits than its factorization.

2025540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2025540 is about 1423.2146710880. The cubic root of 2025540 is about 126.5261445647.

The spelling of 2025540 in words is "two million, twenty-five thousand, five hundred forty".