25135345135505 has 8 divisors (see below), whose sum is σ = 32904451813824. Its totient is φ = 18280251007600.

The previous prime is 25135345135499. The next prime is 25135345135529. The reversal of 25135345135505 is 50553154353152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25135345135505 - 2⁴ = 25135345135489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25135345135505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228503137541 + ... + 228503137650.

It is an arithmetic number, because the mean of its divisors is an integer number (4113056476728).

Almost surely, 2^{25135345135505} is an apocalyptic number.

It is an amenable number.

25135345135505 is a deficient number, since it is larger than the sum of its proper divisors (7769106678319).

25135345135505 is a wasteful number, since it uses less digits than its factorization.

25135345135505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457006275207.

The product of its (nonzero) digits is 3375000, while the sum is 47.

Adding to 25135345135505 its reverse (50553154353152), we get a palindrome (75688499488657).

The spelling of 25135345135505 in words is "twenty-five trillion, one hundred thirty-five billion, three hundred forty-five million, one hundred thirty-five thousand, five hundred five".