25543480 has 16 divisors (see below), whose sum is σ = 57472920. Its totient is φ = 10217376.

The previous prime is 25543477. The next prime is 25543481. The reversal of 25543480 is 8434552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25543481) 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 3 ways as a sum of consecutive naturals, for example, 319254 + ... + 319333.

Almost surely, 2^25543480 is an apocalyptic number.

25543480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25543480 is an abundant number, since it is smaller than the sum of its proper divisors (31929440).

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

25543480 is a wasteful number, since it uses less digits than its factorization.

25543480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638598 (or 638594 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 25543480 is about 5054.0557970802. The cubic root of 25543480 is about 294.5054627178.

The spelling of 25543480 in words is "twenty-five million, five hundred forty-three thousand, four hundred eighty".