25495492947 has 16 divisors (see below), whose sum is σ = 34116346368. Its totient is φ = 16935860480.

The previous prime is 25495492861. The next prime is 25495492991. The reversal of 25495492947 is 74929459452.

It is a cyclic number.

It is not a de Polignac number, because 25495492947 - 2¹⁶ = 25495427411 is a prime.

It is a super-2 number, since 2×25495492947² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25495492147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4805098 + ... + 4810400.

It is an arithmetic number, because the mean of its divisors is an integer number (2132271648).

Almost surely, 2^25495492947 is an apocalyptic number.

25495492947 is a deficient number, since it is larger than the sum of its proper divisors (8620853421).

25495492947 is a wasteful number, since it uses less digits than its factorization.

25495492947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10770.

The product of its digits is 32659200, while the sum is 60.

The spelling of 25495492947 in words is "twenty-five billion, four hundred ninety-five million, four hundred ninety-two thousand, nine hundred forty-seven".