25005312 has 54 divisors (see below), whose sum is σ = 72103122. Its totient is φ = 8334336.

The previous prime is 25005307. The next prime is 25005353. The reversal of 25005312 is 21350052.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21678336 + 3326976 = 4656^2 + 1824^2 .

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

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 5 ways as a sum of consecutive naturals, for example, 3123 + ... + 7730.

It is an arithmetic number, because the mean of its divisors is an integer number (1335243).

Almost surely, 2^25005312 is an apocalyptic number.

It is an amenable number.

25005312 is an abundant number, since it is smaller than the sum of its proper divisors (47097810).

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

25005312 is a wasteful number, since it uses less digits than its factorization.

25005312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10875 (or 10858 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 25005312 is about 5000.5311717857. The cubic root of 25005312 is about 292.4224821976.

Adding to 25005312 its reverse (21350052), we get a palindrome (46355364).

The spelling of 25005312 in words is "twenty-five million, five thousand, three hundred twelve".