25563480 has 32 divisors (see below), whose sum is σ = 76690800. Its totient is φ = 6816896.

The previous prime is 25563469. The next prime is 25563481. The reversal of 25563480 is 8436552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25563481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106395 + ... + 106634.

Almost surely, 2^25563480 is an apocalyptic number.

25563480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25563480 is an abundant number, since it is smaller than the sum of its proper divisors (51127320).

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

25563480 is a wasteful number, since it uses less digits than its factorization.

25563480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213043 (or 213039 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 25563480 is about 5056.0340188729. The cubic root of 25563480 is about 294.5823064974.

The spelling of 25563480 in words is "twenty-five million, five hundred sixty-three thousand, four hundred eighty".