2525904 has 50 divisors (see below), whose sum is σ = 7314450. Its totient is φ = 841536.

The previous prime is 2525851. The next prime is 2525933. The reversal of 2525904 is 4095252.

It can be written as a sum of positive squares in only one way, i.e., 2396304 + 129600 = 1548^2 + 360^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 322 + ... + 2270.

It is an arithmetic number, because the mean of its divisors is an integer number (146289).

2^2525904 is an apocalyptic number.

2525904 is a gapful number since it is divisible by the number (24) 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 2525904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3657225).

2525904 is an abundant number, since it is smaller than the sum of its proper divisors (4788546).

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

2525904 is a wasteful number, since it uses less digits than its factorization.

2525904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969 (or 1954 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2525904 is about 1589.3092839344. The cubic root of 2525904 is about 136.1880328712.

The spelling of 2525904 in words is "two million, five hundred twenty-five thousand, nine hundred four".