25346720 has 144 divisors (see below), whose sum is σ = 72136008. Its totient is φ = 8386560.

The previous prime is 25346719. The next prime is 25346729. The reversal of 25346720 is 2764352.

It can be written as a sum of positive squares in 4 ways, for example, as 16032016 + 9314704 = 4004^2 + 3052^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25346729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 415490 + ... + 415550.

Almost surely, 2^25346720 is an apocalyptic number.

25346720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25346720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36068004).

25346720 is an abundant number, since it is smaller than the sum of its proper divisors (46789288).

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

25346720 is a wasteful number, since it uses less digits than its factorization.

25346720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 25346720 is about 5034.5526117025. The cubic root of 25346720 is about 293.7473263677.

The spelling of 25346720 in words is "twenty-five million, three hundred forty-six thousand, seven hundred twenty".