25550480 has 40 divisors (see below), whose sum is σ = 59671032. Its totient is φ = 10174464.

The previous prime is 25550477. The next prime is 25550491. The reversal of 25550480 is 8405552.

It can be written as a sum of positive squares in 4 ways, for example, as 2202256 + 23348224 = 1484^2 + 4832^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21584 + ... + 22736.

Almost surely, 2^25550480 is an apocalyptic number.

25550480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25550480 is an abundant number, since it is smaller than the sum of its proper divisors (34120552).

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

25550480 is a wasteful number, since it uses less digits than its factorization.

25550480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443 (or 1437 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 25550480 is about 5054.7482627723. The cubic root of 25550480 is about 294.5323626018.

The spelling of 25550480 in words is "twenty-five million, five hundred fifty thousand, four hundred eighty".