25164341605 has 32 divisors (see below), whose sum is σ = 33688488960. Its totient is φ = 17919498240.

The previous prime is 25164341567. The next prime is 25164341611. The reversal of 25164341605 is 50614346152.

It is not a de Polignac number, because 25164341605 - 2⁹ = 25164341093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548181 + ... + 592309.

It is an arithmetic number, because the mean of its divisors is an integer number (1052765280).

Almost surely, 2^25164341605 is an apocalyptic number.

It is an amenable number.

25164341605 is a deficient number, since it is larger than the sum of its proper divisors (8524147355).

25164341605 is a wasteful number, since it uses less digits than its factorization.

25164341605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44461.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 25164341605 its reverse (50614346152), we get a palindrome (75778687757).

The spelling of 25164341605 in words is "twenty-five billion, one hundred sixty-four million, three hundred forty-one thousand, six hundred five".