25320672 has 72 divisors (see below), whose sum is σ = 77556024. Its totient is φ = 7789824.

The previous prime is 25320671. The next prime is 25320689. The reversal of 25320672 is 27602352.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×25320672² = 1282272861063168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25320671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 363 + ... + 7125.

It is an arithmetic number, because the mean of its divisors is an integer number (1077167).

Almost surely, 2^25320672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25320672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38778012).

25320672 is an abundant number, since it is smaller than the sum of its proper divisors (52235352).

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

25320672 is a wasteful number, since it uses less digits than its factorization.

25320672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6792 (or 6781 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 25320672 is about 5031.9650237258. The cubic root of 25320672 is about 293.6466670197.

The spelling of 25320672 in words is "twenty-five million, three hundred twenty thousand, six hundred seventy-two".