25555254460155 has 48 divisors (see below), whose sum is σ = 50625071677440. Its totient is φ = 11682095229504.

The previous prime is 25555254460117. The next prime is 25555254460157. The reversal of 25555254460155 is 55106445255552.

25555254460155 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 5 + 25 + 4 + 4 + 601 + 5 + 5 = 666.

It is not a de Polignac number, because 25555254460155 - 2⁶ = 25555254460091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25555254460157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11170726 + ... + 13262564.

It is an arithmetic number, because the mean of its divisors is an integer number (1054688993280).

Almost surely, 2^{25555254460155} is an apocalyptic number.

25555254460155 is a deficient number, since it is larger than the sum of its proper divisors (25069817217285).

25555254460155 is a wasteful number, since it uses less digits than its factorization.

25555254460155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130640 (or 2130637 counting only the distinct ones).

The product of its (nonzero) digits is 30000000, while the sum is 54.

The spelling of 25555254460155 in words is "twenty-five trillion, five hundred fifty-five billion, two hundred fifty-four million, four hundred sixty thousand, one hundred fifty-five".