25764560 has 20 divisors (see below), whose sum is σ = 59902788. Its totient is φ = 10305792.

The previous prime is 25764559. The next prime is 25764581. The reversal of 25764560 is 6546752.

It can be written as a sum of positive squares in 2 ways, for example, as 6615184 + 19149376 = 2572^2 + 4376^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 25764560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160949 + ... + 161108.

Almost surely, 2^25764560 is an apocalyptic number.

25764560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25764560 is an abundant number, since it is smaller than the sum of its proper divisors (34138228).

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

25764560 is a wasteful number, since it uses less digits than its factorization.

25764560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322070 (or 322064 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 25764560 is about 5075.8802192329. The cubic root of 25764560 is about 295.3526759725.

The spelling of 25764560 in words is "twenty-five million, seven hundred sixty-four thousand, five hundred sixty".