25564470 has 16 divisors (see below), whose sum is σ = 61354800. Its totient is φ = 6817184.

The previous prime is 25564459. The next prime is 25564471. The reversal of 25564470 is 7446552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25564471) by changing a digit.

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, 426045 + ... + 426104.

It is an arithmetic number, because the mean of its divisors is an integer number (3834675).

Almost surely, 2^25564470 is an apocalyptic number.

25564470 is an abundant number, since it is smaller than the sum of its proper divisors (35790330).

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

25564470 is a wasteful number, since it uses less digits than its factorization.

25564470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852159.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 25564470 is about 5056.1319207473. The cubic root of 25564470 is about 294.5861092233.

The spelling of 25564470 in words is "twenty-five million, five hundred sixty-four thousand, four hundred seventy".