25304973 has 4 divisors (see below), whose sum is σ = 33739968. Its totient is φ = 16869980.

The previous prime is 25304971. The next prime is 25304977. The reversal of 25304973 is 37940352.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25304973 - 2¹ = 25304971 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25304971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4217493 + ... + 4217498.

It is an arithmetic number, because the mean of its divisors is an integer number (8434992).

Almost surely, 2^25304973 is an apocalyptic number.

It is an amenable number.

25304973 is a deficient number, since it is larger than the sum of its proper divisors (8434995).

25304973 is an equidigital number, since it uses as much as digits as its factorization.

25304973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8434994.

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

The square root of 25304973 is about 5030.4048544824. The cubic root of 25304973 is about 293.5859667864.

It can be divided in two parts, 2530 and 4973, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 25304973 in words is "twenty-five million, three hundred four thousand, nine hundred seventy-three".