25729788 has 48 divisors (see below), whose sum is σ = 69085184. Its totient is φ = 7300800.

The previous prime is 25729787. The next prime is 25729807. The reversal of 25729788 is 88792752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25729787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12213 + ... + 14163.

Almost surely, 2^25729788 is an apocalyptic number.

25729788 is a gapful number since it is divisible by the number (28) 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 25729788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34542592).

25729788 is an abundant number, since it is smaller than the sum of its proper divisors (43355396).

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

25729788 is a wasteful number, since it uses less digits than its factorization.

25729788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122 (or 2120 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 25729788 is about 5072.4538440483. The cubic root of 25729788 is about 295.2197462574.

The spelling of 25729788 in words is "twenty-five million, seven hundred twenty-nine thousand, seven hundred eighty-eight".