25140366163 has 4 divisors (see below), whose sum is σ = 27425854008. Its totient is φ = 22854878320.

The previous prime is 25140366137. The next prime is 25140366187. The reversal of 25140366163 is 36166304152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25140366163 - 2¹³ = 25140357971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25140366103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1142743906 + ... + 1142743927.

It is an arithmetic number, because the mean of its divisors is an integer number (6856463502).

Almost surely, 2^25140366163 is an apocalyptic number.

25140366163 is a deficient number, since it is larger than the sum of its proper divisors (2285487845).

25140366163 is a wasteful number, since it uses less digits than its factorization.

25140366163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285487844.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 25140366163 in words is "twenty-five billion, one hundred forty million, three hundred sixty-six thousand, one hundred sixty-three".