25545413415 has 16 divisors (see below), whose sum is σ = 41084441568. Its totient is φ = 13553627136.

The previous prime is 25545413407. The next prime is 25545413429. The reversal of 25545413415 is 51431454552.

It is not a de Polignac number, because 25545413415 - 2³ = 25545413407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4409094 + ... + 4414883.

It is an arithmetic number, because the mean of its divisors is an integer number (2567777598).

Almost surely, 2^25545413415 is an apocalyptic number.

25545413415 is a deficient number, since it is larger than the sum of its proper divisors (15539028153).

25545413415 is a wasteful number, since it uses less digits than its factorization.

25545413415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8824178.

The product of its digits is 240000, while the sum is 39.

Adding to 25545413415 its reverse (51431454552), we get a palindrome (76976867967).

The spelling of 25545413415 in words is "twenty-five billion, five hundred forty-five million, four hundred thirteen thousand, four hundred fifteen".