2525540 has 24 divisors (see below), whose sum is σ = 5338872. Its totient is φ = 1003520.

The previous prime is 2525531. The next prime is 2525557. The reversal of 2525540 is 455252.

It can be written as a sum of positive squares in 4 ways, for example, as 1493284 + 1032256 = 1222^2 + 1016^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3620 + ... + 4260.

It is an arithmetic number, because the mean of its divisors is an integer number (222453).

2^2525540 is an apocalyptic number.

2525540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2525540 is an abundant number, since it is smaller than the sum of its proper divisors (2813332).

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

2525540 is a wasteful number, since it uses less digits than its factorization.

2525540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 2525540 is about 1589.1947646528. The cubic root of 2525540 is about 136.1814906820.

The spelling of 2525540 in words is "two million, five hundred twenty-five thousand, five hundred forty".