25929090 has 72 divisors (see below), whose sum is σ = 74132604. Its totient is φ = 6283200.

The previous prime is 25929083. The next prime is 25929121. The reversal of 25929090 is 9092952.

It can be written as a sum of positive squares in 2 ways, for example, as 21040569 + 4888521 = 4587^2 + 2211^2 .

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 35 ways as a sum of consecutive naturals, for example, 9700 + ... + 12080.

Almost surely, 2^25929090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25929090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37066302).

25929090 is an abundant number, since it is smaller than the sum of its proper divisors (48203514).

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

25929090 is a wasteful number, since it uses less digits than its factorization.

25929090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 25929090 is about 5092.0614685999. The cubic root of 25929090 is about 295.9800403512.

The spelling of 25929090 in words is "twenty-five million, nine hundred twenty-nine thousand, ninety".