25286480 has 40 divisors (see below), whose sum is σ = 62252712. Its totient is φ = 9519104.

The previous prime is 25286479. The next prime is 25286491. The reversal of 25286480 is 8468252.

It can be written as a sum of positive squares in 4 ways, for example, as 6031936 + 19254544 = 2456^2 + 4388^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 25286480.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7937 + ... + 10656.

Almost surely, 2^25286480 is an apocalyptic number.

25286480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25286480 is an abundant number, since it is smaller than the sum of its proper divisors (36966232).

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

25286480 is a wasteful number, since it uses less digits than its factorization.

25286480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18623 (or 18617 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 25286480 is about 5028.5663961014. The cubic root of 25286480 is about 293.5144313297.

The spelling of 25286480 in words is "twenty-five million, two hundred eighty-six thousand, four hundred eighty".