25961560 has 16 divisors (see below), whose sum is σ = 58413600. Its totient is φ = 10384608.

The previous prime is 25961521. The next prime is 25961563. The reversal of 25961560 is 6516952.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25961563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324480 + ... + 324559.

It is an arithmetic number, because the mean of its divisors is an integer number (3650850).

Almost surely, 2^25961560 is an apocalyptic number.

25961560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25961560 is an abundant number, since it is smaller than the sum of its proper divisors (32452040).

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

25961560 is a wasteful number, since it uses less digits than its factorization.

25961560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649050 (or 649046 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 25961560 is about 5095.2487672340. The cubic root of 25961560 is about 296.1035369477.

The spelling of 25961560 in words is "twenty-five million, nine hundred sixty-one thousand, five hundred sixty".