25386720 has 48 divisors (see below), whose sum is σ = 79969680. Its totient is φ = 6769664.

The previous prime is 25386709. The next prime is 25386731. The reversal of 25386720 is 2768352.

It is an interprime number because it is at equal distance from previous prime (25386709) and next prime (25386731).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 25965 + ... + 26924.

It is an arithmetic number, because the mean of its divisors is an integer number (1666035).

Almost surely, 2^25386720 is an apocalyptic number.

25386720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25386720 is an abundant number, since it is smaller than the sum of its proper divisors (54582960).

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

25386720 is a wasteful number, since it uses less digits than its factorization.

25386720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52907 (or 52899 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 25386720 is about 5038.5235932761. The cubic root of 25386720 is about 293.9017673576.

It can be divided in two parts, 25386 and 720, that added together give a triangular number (26106 = T₂₂₈).

The spelling of 25386720 in words is "twenty-five million, three hundred eighty-six thousand, seven hundred twenty".