25885240 has 16 divisors (see below), whose sum is σ = 58241880. Its totient is φ = 10354080.

The previous prime is 25885231. The next prime is 25885241. The reversal of 25885240 is 4258852.

It is a junction number, because it is equal to n+sod(n) for n = 25885196 and 25885205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25885241) 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 3 ways as a sum of consecutive naturals, for example, 323526 + ... + 323605.

Almost surely, 2^25885240 is an apocalyptic number.

25885240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25885240 is an abundant number, since it is smaller than the sum of its proper divisors (32356640).

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

25885240 is a wasteful number, since it uses less digits than its factorization.

25885240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647142 (or 647138 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 25885240 is about 5087.7539248670. The cubic root of 25885240 is about 295.8130972514.

The spelling of 25885240 in words is "twenty-five million, eight hundred eighty-five thousand, two hundred forty".