25340405155 has 16 divisors (see below), whose sum is σ = 33632673984. Its totient is φ = 18207158400.

The previous prime is 25340405143. The next prime is 25340405191. The reversal of 25340405155 is 55150404352.

It is not a de Polignac number, because 25340405155 - 2²³ = 25332016547 is a prime.

It is a super-2 number, since 2×25340405155² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25340405155.

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, 5265871 + ... + 5270680.

It is an arithmetic number, because the mean of its divisors is an integer number (2102042124).

Almost surely, 2^25340405155 is an apocalyptic number.

25340405155 is a deficient number, since it is larger than the sum of its proper divisors (8292268829).

25340405155 is a wasteful number, since it uses less digits than its factorization.

25340405155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10536606.

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 25340405155 in words is "twenty-five billion, three hundred forty million, four hundred five thousand, one hundred fifty-five".