25354440013 has 8 divisors (see below), whose sum is σ = 28978895232. Its totient is φ = 21730582896.

The previous prime is 25354439993. The next prime is 25354440029. The reversal of 25354440013 is 31004445352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25354440013 - 2²¹ = 25352342861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25354440043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54670 + ... + 231727.

It is an arithmetic number, because the mean of its divisors is an integer number (3622361904).

Almost surely, 2^25354440013 is an apocalyptic number.

It is an amenable number.

25354440013 is a deficient number, since it is larger than the sum of its proper divisors (3624455219).

25354440013 is a wasteful number, since it uses less digits than its factorization.

25354440013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299051.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 25354440013 its reverse (31004445352), we get a palindrome (56358885365).

The spelling of 25354440013 in words is "twenty-five billion, three hundred fifty-four million, four hundred forty thousand, thirteen".