25440155243135 has 16 divisors (see below), whose sum is σ = 30581554782240. Its totient is φ = 20316549442560.

The previous prime is 25440155243101. The next prime is 25440155243183. The reversal of 25440155243135 is 53134255104452.

It is a happy number.

It is not a de Polignac number, because 25440155243135 - 2²⁶ = 25440088134271 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49345040 + ... + 49857930.

It is an arithmetic number, because the mean of its divisors is an integer number (1911347173890).

Almost surely, 2^{25440155243135} is an apocalyptic number.

25440155243135 is a deficient number, since it is larger than the sum of its proper divisors (5141399539105).

25440155243135 is a wasteful number, since it uses less digits than its factorization.

25440155243135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530218.

The product of its (nonzero) digits is 1440000, while the sum is 44.

The spelling of 25440155243135 in words is "twenty-five trillion, four hundred forty billion, one hundred fifty-five million, two hundred forty-three thousand, one hundred thirty-five".