25205480 has 32 divisors (see below), whose sum is σ = 58544640. Its totient is φ = 9756480.

The previous prime is 25205461. The next prime is 25205483. The reversal of 25205480 is 8450252.

It is not an unprimeable number, because it can be changed into a prime (25205483) 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, 8924 + ... + 11403.

It is an arithmetic number, because the mean of its divisors is an integer number (1829520).

Almost surely, 2^25205480 is an apocalyptic number.

25205480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25205480 is an abundant number, since it is smaller than the sum of its proper divisors (33339160).

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

25205480 is a wasteful number, since it uses less digits than its factorization.

25205480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20369 (or 20365 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 25205480 is about 5020.5059505990. The cubic root of 25205480 is about 293.2006918669.

It can be divided in two parts, 2520 and 5480, that added together give a cube (8000 = 20³).

The spelling of 25205480 in words is "twenty-five million, two hundred five thousand, four hundred eighty".