25510425551 has 16 divisors (see below), whose sum is σ = 28674496704. Its totient is φ = 22518549504.

The previous prime is 25510425529. The next prime is 25510425569. The reversal of 25510425551 is 15552401552.

It is a cyclic number.

It is not a de Polignac number, because 25510425551 - 2¹⁴ = 25510409167 is a prime.

It is a super-2 number, since 2×25510425551² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25510425581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1545695 + ... + 1562111.

It is an arithmetic number, because the mean of its divisors is an integer number (1792156044).

Almost surely, 2^25510425551 is an apocalyptic number.

25510425551 is a deficient number, since it is larger than the sum of its proper divisors (3164071153).

25510425551 is a wasteful number, since it uses less digits than its factorization.

25510425551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21650.

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 25510425551 in words is "twenty-five billion, five hundred ten million, four hundred twenty-five thousand, five hundred fifty-one".