25842090 has 32 divisors (see below), whose sum is σ = 65286720. Its totient is φ = 6528384.

The previous prime is 25842079. The next prime is 25842107. The reversal of 25842090 is 9024852.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22099 + ... + 23238.

It is an arithmetic number, because the mean of its divisors is an integer number (2040210).

Almost surely, 2^25842090 is an apocalyptic number.

25842090 is an abundant number, since it is smaller than the sum of its proper divisors (39444630).

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

25842090 is a wasteful number, since it uses less digits than its factorization.

25842090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45366.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 25842090 is about 5083.5115815743. The cubic root of 25842090 is about 295.6486350029.

The spelling of 25842090 in words is "twenty-five million, eight hundred forty-two thousand, ninety".