25710347073 has 4 divisors (see below), whose sum is σ = 34280462768. Its totient is φ = 17140231380.

The previous prime is 25710347017. The next prime is 25710347081. The reversal of 25710347073 is 37074301752.

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 not a de Polignac number, because 25710347073 - 2⁶ = 25710347009 is a prime.

It is a super-2 number, since 2×25710347073² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25710347093) 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, 4285057843 + ... + 4285057848.

It is an arithmetic number, because the mean of its divisors is an integer number (8570115692).

Almost surely, 2^25710347073 is an apocalyptic number.

It is an amenable number.

25710347073 is a deficient number, since it is larger than the sum of its proper divisors (8570115695).

25710347073 is an equidigital number, since it uses as much as digits as its factorization.

25710347073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570115694.

The product of its (nonzero) digits is 123480, while the sum is 39.

The spelling of 25710347073 in words is "twenty-five billion, seven hundred ten million, three hundred forty-seven thousand, seventy-three".