25490973 has 16 divisors (see below), whose sum is σ = 36106560. Its totient is φ = 15941376.

The previous prime is 25490963. The next prime is 25490981. The reversal of 25490973 is 37909452.

It is not a de Polignac number, because 25490973 - 2⁶ = 25490909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25490953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19618 + ... + 20876.

It is an arithmetic number, because the mean of its divisors is an integer number (2256660).

Almost surely, 2^25490973 is an apocalyptic number.

It is an amenable number.

25490973 is a deficient number, since it is larger than the sum of its proper divisors (10615587).

25490973 is a wasteful number, since it uses less digits than its factorization.

25490973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 25490973 is about 5048.8585838781. The cubic root of 25490973 is about 294.3035298296.

The spelling of 25490973 in words is "twenty-five million, four hundred ninety thousand, nine hundred seventy-three".