25306490 has 16 divisors (see below), whose sum is σ = 49692960. Its totient is φ = 9202320.

The previous prime is 25306487. The next prime is 25306517. The reversal of 25306490 is 9460352.

It is a super-2 number, since 2×25306490² = 1280836872240200, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 114920 + ... + 115139.

It is an arithmetic number, because the mean of its divisors is an integer number (3105810).

Almost surely, 2^25306490 is an apocalyptic number.

25306490 is a deficient number, since it is larger than the sum of its proper divisors (24386470).

25306490 is a wasteful number, since it uses less digits than its factorization.

25306490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230077.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 25306490 is about 5030.5556353150. Note that the first 3 decimals coincide. The cubic root of 25306490 is about 293.5918333673.

The spelling of 25306490 in words is "twenty-five million, three hundred six thousand, four hundred ninety".