25263564 has 48 divisors (see below), whose sum is σ = 63504000. Its totient is φ = 7787776.

The previous prime is 25263551. The next prime is 25263571. The reversal of 25263564 is 46536252.

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 in 15 ways as a sum of consecutive naturals, for example, 10987 + ... + 13085.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^25263564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25263564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31752000).

25263564 is an abundant number, since it is smaller than the sum of its proper divisors (38240436).

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

25263564 is a wasteful number, since it uses less digits than its factorization.

25263564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182 (or 2180 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 25263564 is about 5026.2872977975. The cubic root of 25263564 is about 293.4257382203.

The spelling of 25263564 in words is "twenty-five million, two hundred sixty-three thousand, five hundred sixty-four".