25620073 has 4 divisors (see below), whose sum is σ = 25720020. Its totient is φ = 25520128.

The previous prime is 25620059. The next prime is 25620097. The reversal of 25620073 is 37002652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19254544 + 6365529 = 4388^2 + 2523^2 .

It is a cyclic number.

It is not a de Polignac number, because 25620073 - 2²¹ = 23522921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25620473) 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, 49588 + ... + 50101.

It is an arithmetic number, because the mean of its divisors is an integer number (6430005).

Almost surely, 2^25620073 is an apocalyptic number.

It is an amenable number.

25620073 is a deficient number, since it is larger than the sum of its proper divisors (99947).

25620073 is an equidigital number, since it uses as much as digits as its factorization.

25620073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99946.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 25620073 is about 5061.6275050620. The cubic root of 25620073 is about 294.7995305628.

The spelling of 25620073 in words is "twenty-five million, six hundred twenty thousand, seventy-three".