25413205545 has 64 divisors (see below), whose sum is σ = 55604989440. Its totient is φ = 10723809024.

The previous prime is 25413205537. The next prime is 25413205607. The reversal of 25413205545 is 54550231452.

25413205545 is a `hidden beast` number, since 2 + 541 + 3 + 20 + 55 + 45 = 666.

It is not a de Polignac number, because 25413205545 - 2³ = 25413205537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1022034 + ... + 1046603.

It is an arithmetic number, because the mean of its divisors is an integer number (868827960).

Almost surely, 2^25413205545 is an apocalyptic number.

It is an amenable number.

25413205545 is an abundant number, since it is smaller than the sum of its proper divisors (30191783895).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25413205545 is a wasteful number, since it uses less digits than its factorization.

25413205545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068671 (or 2068665 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 25413205545 its reverse (54550231452), we get a palindrome (79963436997).

The spelling of 25413205545 in words is "twenty-five billion, four hundred thirteen million, two hundred five thousand, five hundred forty-five".