25287790 has 24 divisors (see below), whose sum is σ = 50034600. Its totient is φ = 9195120.

The previous prime is 25287781. The next prime is 25287793. The reversal of 25287790 is 9778252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25287793) 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 11 ways as a sum of consecutive naturals, for example, 9240 + ... + 11659.

It is an arithmetic number, because the mean of its divisors is an integer number (2084775).

Almost surely, 2^25287790 is an apocalyptic number.

25287790 is a deficient number, since it is larger than the sum of its proper divisors (24746810).

25287790 is a wasteful number, since it uses less digits than its factorization.

25287790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20928 (or 20917 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 25287790 is about 5028.6966502266. The cubic root of 25287790 is about 293.5194998783.

The spelling of 25287790 in words is "twenty-five million, two hundred eighty-seven thousand, seven hundred ninety".