25730890 has 16 divisors (see below), whose sum is σ = 46467432. Its totient is φ = 10258624.

The previous prime is 25730849. The next prime is 25730893. The reversal of 25730890 is 9803752.

It can be written as a sum of positive squares in 4 ways, for example, as 19811401 + 5919489 = 4451^2 + 2433^2 .

It is not an unprimeable number, because it can be changed into a prime (25730893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889 + ... + 7228.

Almost surely, 2^25730890 is an apocalyptic number.

25730890 is a deficient number, since it is larger than the sum of its proper divisors (20736542).

25730890 is a wasteful number, since it uses less digits than its factorization.

25730890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8441.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 25730890 is about 5072.5624688120. The cubic root of 25730890 is about 295.2239609250.

The spelling of 25730890 in words is "twenty-five million, seven hundred thirty thousand, eight hundred ninety".