25305090 has 16 divisors (see below), whose sum is σ = 60732288. Its totient is φ = 6748016.

The previous prime is 25305053. The next prime is 25305097. The reversal of 25305090 is 9050352.

It is a self number, because there is not a number n which added to its sum of digits gives 25305090.

It is not an unprimeable number, because it can be changed into a prime (25305097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421722 + ... + 421781.

It is an arithmetic number, because the mean of its divisors is an integer number (3795768).

Almost surely, 2^25305090 is an apocalyptic number.

25305090 is an abundant number, since it is smaller than the sum of its proper divisors (35427198).

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

25305090 is a wasteful number, since it uses less digits than its factorization.

25305090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843513.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 25305090 is about 5030.4164837516. The cubic root of 25305090 is about 293.5864192601.

The spelling of 25305090 in words is "twenty-five million, three hundred five thousand, ninety".