25421067045 has 48 divisors (see below), whose sum is σ = 50896527552. Its totient is φ = 11600340480.

The previous prime is 25421067041. The next prime is 25421067059. The reversal of 25421067045 is 54076012452.

It is a happy number.

25421067045 is a `hidden beast` number, since 2 + 542 + 1 + 0 + 6 + 70 + 45 = 666.

It is not a de Polignac number, because 25421067045 - 2² = 25421067041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25421067041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1502047 + ... + 1518876.

It is an arithmetic number, because the mean of its divisors is an integer number (1060344324).

Almost surely, 2^25421067045 is an apocalyptic number.

It is an amenable number.

25421067045 is an abundant number, since it is smaller than the sum of its proper divisors (25475460507).

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

25421067045 is a wasteful number, since it uses less digits than its factorization.

25421067045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020962 (or 3020959 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

Adding to 25421067045 its reverse (54076012452), we get a palindrome (79497079497).

The spelling of 25421067045 in words is "twenty-five billion, four hundred twenty-one million, sixty-seven thousand, forty-five".