25545305144551 has 32 divisors (see below), whose sum is σ = 27476660090880. Its totient is φ = 23663618035200.

The previous prime is 25545305144549. The next prime is 25545305144573. The reversal of 25545305144551 is 15544150354552.

It is not a de Polignac number, because 25545305144551 - 2¹ = 25545305144549 is a prime.

It is a super-3 number, since 3×25545305144551³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25545305144495 and 25545305144504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25545305144351) 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, 557479221 + ... + 557525041.

It is an arithmetic number, because the mean of its divisors is an integer number (858645627840).

Almost surely, 2^{25545305144551} is an apocalyptic number.

25545305144551 is a deficient number, since it is larger than the sum of its proper divisors (1931354946329).

25545305144551 is a wasteful number, since it uses less digits than its factorization.

25545305144551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47215.

The product of its (nonzero) digits is 6000000, while the sum is 49.

The spelling of 25545305144551 in words is "twenty-five trillion, five hundred forty-five billion, three hundred five million, one hundred forty-four thousand, five hundred fifty-one".