25480720 has 40 divisors (see below), whose sum is σ = 59460480. Its totient is φ = 10154880.

The previous prime is 25480717. The next prime is 25480733. The reversal of 25480720 is 2708452.

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, 34111 + ... + 34849.

It is an arithmetic number, because the mean of its divisors is an integer number (1486512).

Almost surely, 2^25480720 is an apocalyptic number.

25480720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25480720 is an abundant number, since it is smaller than the sum of its proper divisors (33979760).

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

25480720 is a wasteful number, since it uses less digits than its factorization.

25480720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 25480720 is about 5047.8431037424. The cubic root of 25480720 is about 294.2640662027.

The spelling of 25480720 in words is "twenty-five million, four hundred eighty thousand, seven hundred twenty".