25523040 has 48 divisors (see below), whose sum is σ = 80399088. Its totient is φ = 6806016.

The previous prime is 25523011. The next prime is 25523087. The reversal of 25523040 is 4032552.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 25522998 and 25523016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26107 + ... + 27066.

It is an arithmetic number, because the mean of its divisors is an integer number (1674981).

Almost surely, 2^25523040 is an apocalyptic number.

25523040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25523040 is an abundant number, since it is smaller than the sum of its proper divisors (54876048).

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

25523040 is a wasteful number, since it uses less digits than its factorization.

25523040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53191 (or 53183 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 25523040 is about 5052.0332540473. The cubic root of 25523040 is about 294.4268869190.

Adding to 25523040 its reverse (4032552), we get a palindrome (29555592).

The spelling of 25523040 in words is "twenty-five million, five hundred twenty-three thousand, forty".