25385720 has 16 divisors (see below), whose sum is σ = 57117960. Its totient is φ = 10154272.

The previous prime is 25385719. The next prime is 25385747. The reversal of 25385720 is 2758352.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 317282 + ... + 317361.

Almost surely, 2^25385720 is an apocalyptic number.

25385720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25385720 is an abundant number, since it is smaller than the sum of its proper divisors (31732240).

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

25385720 is a wasteful number, since it uses less digits than its factorization.

25385720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634654 (or 634650 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 25385720 is about 5038.4243568798. The cubic root of 25385720 is about 293.8979083107.

The spelling of 25385720 in words is "twenty-five million, three hundred eighty-five thousand, seven hundred twenty".