25621052 has 6 divisors (see below), whose sum is σ = 44836848. Its totient is φ = 12810524.

The previous prime is 25621033. The next prime is 25621067. The reversal of 25621052 is 25012652.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3202628 + ... + 3202635.

It is an arithmetic number, because the mean of its divisors is an integer number (7472808).

Almost surely, 2^25621052 is an apocalyptic number.

It is an amenable number.

25621052 is a deficient number, since it is larger than the sum of its proper divisors (19215796).

25621052 is a wasteful number, since it uses less digits than its factorization.

25621052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6405267 (or 6405265 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 25621052 is about 5061.7242121633. The cubic root of 25621052 is about 294.8032854970.

Subtracting from 25621052 its reverse (25012652), we obtain a square (608400 = 780²).

The spelling of 25621052 in words is "twenty-five million, six hundred twenty-one thousand, fifty-two".