25815452 has 96 divisors (see below), whose sum is σ = 57153600. Its totient is φ = 10063872.

The previous prime is 25815443. The next prime is 25815457. The reversal of 25815452 is 25451852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25815457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 487058 + ... + 487110.

It is an arithmetic number, because the mean of its divisors is an integer number (595350).

Almost surely, 2^25815452 is an apocalyptic number.

It is an amenable number.

25815452 is an abundant number, since it is smaller than the sum of its proper divisors (31338148).

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

25815452 is a wasteful number, since it uses less digits than its factorization.

25815452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 133 counting only the distinct ones).

The product of its digits is 16000, while the sum is 32.

The square root of 25815452 is about 5080.8908667674. The cubic root of 25815452 is about 295.5470153080.

The spelling of 25815452 in words is "twenty-five million, eight hundred fifteen thousand, four hundred fifty-two".