25555540511 has 8 divisors (see below), whose sum is σ = 26804824800. Its totient is φ = 24317770752.

The previous prime is 25555540487. The next prime is 25555540519. The reversal of 25555540511 is 11504555552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25555540511 - 2³⁰ = 24481798687 is a prime.

It is a super-2 number, since 2×25555540511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25555540519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2874086 + ... + 2882963.

It is an arithmetic number, because the mean of its divisors is an integer number (3350603100).

Almost surely, 2^25555540511 is an apocalyptic number.

25555540511 is a deficient number, since it is larger than the sum of its proper divisors (1249284289).

25555540511 is a wasteful number, since it uses less digits than its factorization.

25555540511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5757265.

The product of its (nonzero) digits is 125000, while the sum is 38.

The spelling of 25555540511 in words is "twenty-five billion, five hundred fifty-five million, five hundred forty thousand, five hundred eleven".