25490560 has 32 divisors (see below), whose sum is σ = 60939900. Its totient is φ = 10195968.

The previous prime is 25490557. The next prime is 25490567. The reversal of 25490560 is 6509452.

It can be written as a sum of positive squares in 2 ways, for example, as 24522304 + 968256 = 4952^2 + 984^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×25490560² = 1299537298227200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25490567) 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, 19275 + ... + 20554.

Almost surely, 2^25490560 is an apocalyptic number.

25490560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25490560 is an abundant number, since it is smaller than the sum of its proper divisors (35449340).

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

25490560 is an equidigital number, since it uses as much as digits as its factorization.

25490560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39848 (or 39836 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 25490560 is about 5048.8176833790. The cubic root of 25490560 is about 294.3019404040.

The spelling of 25490560 in words is "twenty-five million, four hundred ninety thousand, five hundred sixty".