25432145435505 has 16 divisors (see below), whose sum is σ = 40884283093824. Its totient is φ = 13499527433280.

The previous prime is 25432145435449. The next prime is 25432145435551. The reversal of 25432145435505 is 50553454123452.

It is not a de Polignac number, because 25432145435505 - 2¹³ = 25432145427313 is a prime.

It is a super-2 number, since 2×25432145435505² (a number of 28 digits) contains 22 as substring.

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, 4017713334 + ... + 4017719663.

It is an arithmetic number, because the mean of its divisors is an integer number (2555267693364).

Almost surely, 2^{25432145435505} is an apocalyptic number.

It is an amenable number.

25432145435505 is a deficient number, since it is larger than the sum of its proper divisors (15452137658319).

25432145435505 is a wasteful number, since it uses less digits than its factorization.

25432145435505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8035433216.

The product of its (nonzero) digits is 7200000, while the sum is 48.

Adding to 25432145435505 its reverse (50553454123452), we get a palindrome (75985599558957).

The spelling of 25432145435505 in words is "twenty-five trillion, four hundred thirty-two billion, one hundred forty-five million, four hundred thirty-five thousand, five hundred five".