25752720 has 80 divisors (see below), whose sum is σ = 91244160. Its totient is φ = 5885952.

The previous prime is 25752719. The next prime is 25752731. The reversal of 25752720 is 2725752.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5985 + ... + 9344.

It is an arithmetic number, because the mean of its divisors is an integer number (1140552).

Almost surely, 2^25752720 is an apocalyptic number.

25752720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25752720 is an abundant number, since it is smaller than the sum of its proper divisors (65491440).

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

25752720 is a wasteful number, since it uses less digits than its factorization.

25752720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15352 (or 15346 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 25752720 is about 5074.7137850326. The cubic root of 25752720 is about 295.3074263287.

The spelling of 25752720 in words is "twenty-five million, seven hundred fifty-two thousand, seven hundred twenty".