25309473 has 16 divisors (see below), whose sum is σ = 38924160. Its totient is φ = 14328576.

The previous prime is 25309457. The next prime is 25309483. The reversal of 25309473 is 37490352.

It is a happy number.

It is not a de Polignac number, because 25309473 - 2⁴ = 25309457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25309433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3240 + ... + 7817.

It is an arithmetic number, because the mean of its divisors is an integer number (2432760).

Almost surely, 2^25309473 is an apocalyptic number.

It is an amenable number.

25309473 is a deficient number, since it is larger than the sum of its proper divisors (13614687).

25309473 is a wasteful number, since it uses less digits than its factorization.

25309473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11176.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 25309473 is about 5030.8521147018. The cubic root of 25309473 is about 293.6033686168.

The spelling of 25309473 in words is "twenty-five million, three hundred nine thousand, four hundred seventy-three".