25748720 has 40 divisors (see below), whose sum is σ = 60097344. Its totient is φ = 10259712.

The previous prime is 25748711. The next prime is 25748729. The reversal of 25748720 is 2784752.

It is an interprime number because it is at equal distance from previous prime (25748711) and next prime (25748729).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25748729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28922 + ... + 29798.

Almost surely, 2^25748720 is an apocalyptic number.

25748720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25748720 is an abundant number, since it is smaller than the sum of its proper divisors (34348624).

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

25748720 is a wasteful number, since it uses less digits than its factorization.

25748720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 25748720 is about 5074.3196588311. The cubic root of 25748720 is about 295.2921361526.

The spelling of 25748720 in words is "twenty-five million, seven hundred forty-eight thousand, seven hundred twenty".