25393924087087 has 4 divisors (see below), whose sum is σ = 26730446407480. Its totient is φ = 24057401766696.

The previous prime is 25393924087079. The next prime is 25393924087097. The reversal of 25393924087087 is 78078042939352.

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

It is a cyclic number.

It is not a de Polignac number, because 25393924087087 - 2³ = 25393924087079 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 (25393924087097) 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, 668261160168 + ... + 668261160205.

It is an arithmetic number, because the mean of its divisors is an integer number (6682611601870).

Almost surely, 2^{25393924087087} is an apocalyptic number.

25393924087087 is a deficient number, since it is larger than the sum of its proper divisors (1336522320393).

25393924087087 is a wasteful number, since it uses less digits than its factorization.

25393924087087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336522320392.

The product of its (nonzero) digits is 182891520, while the sum is 67.

The spelling of 25393924087087 in words is "twenty-five trillion, three hundred ninety-three billion, nine hundred twenty-four million, eighty-seven thousand, eighty-seven".