25606560 has 96 divisors (see below), whose sum is σ = 92195712. Its totient is φ = 5852160.

The previous prime is 25606549. The next prime is 25606561. The reversal of 25606560 is 6560652.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (25606561) 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 15 ways as a sum of consecutive naturals, for example, 451 + ... + 7170.

It is an arithmetic number, because the mean of its divisors is an integer number (960372).

Almost surely, 2^25606560 is an apocalyptic number.

25606560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25606560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46097856).

25606560 is an abundant number, since it is smaller than the sum of its proper divisors (66589152).

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

25606560 is a wasteful number, since it uses less digits than its factorization.

25606560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7646 (or 7638 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 25606560 is about 5060.2924816655. The cubic root of 25606560 is about 294.7476919565.

The spelling of 25606560 in words is "twenty-five million, six hundred six thousand, five hundred sixty".