25535543400255 has 32 divisors (see below), whose sum is σ = 46694176948224. Its totient is φ = 11673238300416.

The previous prime is 25535543400217. The next prime is 25535543400259. The reversal of 25535543400255 is 55200434553552.

It is a happy number.

It is not a de Polignac number, because 25535543400255 - 2⁷ = 25535543400127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25535543400259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6660162 + ... + 9768768.

It is an arithmetic number, because the mean of its divisors is an integer number (1459193029632).

Almost surely, 2^{25535543400255} is an apocalyptic number.

25535543400255 is a deficient number, since it is larger than the sum of its proper divisors (21158633547969).

25535543400255 is a wasteful number, since it uses less digits than its factorization.

25535543400255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186855.

The product of its (nonzero) digits is 9000000, while the sum is 48.

The spelling of 25535543400255 in words is "twenty-five trillion, five hundred thirty-five billion, five hundred forty-three million, four hundred thousand, two hundred fifty-five".