25958540597 has 4 divisors (see below), whose sum is σ = 28318407936. Its totient is φ = 23598673260.

The previous prime is 25958540591. The next prime is 25958540599. The reversal of 25958540597 is 79504585952.

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 25958540597 - 2¹⁶ = 25958475061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25958540591) 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, 1179933653 + ... + 1179933674.

It is an arithmetic number, because the mean of its divisors is an integer number (7079601984).

Almost surely, 2^25958540597 is an apocalyptic number.

It is an amenable number.

25958540597 is a deficient number, since it is larger than the sum of its proper divisors (2359867339).

25958540597 is a wasteful number, since it uses less digits than its factorization.

25958540597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359867338.

The product of its (nonzero) digits is 22680000, while the sum is 59.

The spelling of 25958540597 in words is "twenty-five billion, nine hundred fifty-eight million, five hundred forty thousand, five hundred ninety-seven".