25551214551 has 12 divisors (see below), whose sum is σ = 37287798912. Its totient is φ = 16858532736.

The previous prime is 25551214543. The next prime is 25551214553. The reversal of 25551214551 is 15541215552.

25551214551 is a `hidden beast` number, since 2 + 55 + 51 + 2 + 1 + 4 + 551 = 666.

It is not a de Polignac number, because 25551214551 - 2³ = 25551214543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25551214553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14633271 + ... + 14635016.

It is an arithmetic number, because the mean of its divisors is an integer number (3107316576).

Almost surely, 2^25551214551 is an apocalyptic number.

25551214551 is a deficient number, since it is larger than the sum of its proper divisors (11736584361).

25551214551 is a wasteful number, since it uses less digits than its factorization.

25551214551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29268390 (or 29268387 counting only the distinct ones).

The product of its digits is 50000, while the sum is 36.

The spelling of 25551214551 in words is "twenty-five billion, five hundred fifty-one million, two hundred fourteen thousand, five hundred fifty-one".