25328712597 has 4 divisors (see below), whose sum is σ = 33771616800. Its totient is φ = 16885808396.

The previous prime is 25328712583. The next prime is 25328712599. The reversal of 25328712597 is 79521782352.

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 25328712597 - 2¹² = 25328708501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25328712599) 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, 4221452097 + ... + 4221452102.

It is an arithmetic number, because the mean of its divisors is an integer number (8442904200).

Almost surely, 2^25328712597 is an apocalyptic number.

It is an amenable number.

25328712597 is a deficient number, since it is larger than the sum of its proper divisors (8442904203).

25328712597 is an equidigital number, since it uses as much as digits as its factorization.

25328712597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8442904202.

The product of its digits is 2116800, while the sum is 51.

The spelling of 25328712597 in words is "twenty-five billion, three hundred twenty-eight million, seven hundred twelve thousand, five hundred ninety-seven".