25920073 has 4 divisors (see below), whose sum is σ = 25930368. Its totient is φ = 25909780.

The previous prime is 25920031. The next prime is 25920079. The reversal of 25920073 is 37002952.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25920073 - 2²¹ = 23822921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25920079) 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, 1440 + ... + 7342.

It is an arithmetic number, because the mean of its divisors is an integer number (6482592).

Almost surely, 2^25920073 is an apocalyptic number.

It is an amenable number.

25920073 is a deficient number, since it is larger than the sum of its proper divisors (10295).

25920073 is an equidigital number, since it uses as much as digits as its factorization.

25920073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10294.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 25920073 is about 5091.1759938152. The cubic root of 25920073 is about 295.9457267488.

The spelling of 25920073 in words is "twenty-five million, nine hundred twenty thousand, seventy-three".