25429405155 has 128 divisors (see below), whose sum is σ = 53891481600. Its totient is φ = 9919065600.

The previous prime is 25429405087. The next prime is 25429405159. The reversal of 25429405155 is 55150492452.

It is a Cunningham number, because it is equal to 159466²-1.

It is not a de Polignac number, because 25429405155 - 2¹⁴ = 25429388771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25429405159) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2386690 + ... + 2397320.

It is an arithmetic number, because the mean of its divisors is an integer number (421027200).

Almost surely, 2^25429405155 is an apocalyptic number.

25429405155 is an abundant number, since it is smaller than the sum of its proper divisors (28462076445).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25429405155 is a wasteful number, since it uses less digits than its factorization.

25429405155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10785.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 25429405155 in words is "twenty-five billion, four hundred twenty-nine million, four hundred five thousand, one hundred fifty-five".