25495466929 has 3 divisors (see below), whose sum is σ = 25495626603. Its totient is φ = 25495307256.

The previous prime is 25495466881. The next prime is 25495466959. The reversal of 25495466929 is 92966459452.

The square root of 25495466929 is 159673.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 38626225 + 25456840704 = 6215^2 + 159552^2 .

It is not a de Polignac number, because 25495466929 - 2¹⁷ = 25495335857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25495466959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 79837 + ... + 239509.

It is an arithmetic number, because the mean of its divisors is an integer number (8498542201).

Almost surely, 2^25495466929 is an apocalyptic number.

25495466929 is the 159673-rd square number.

25495466929 is the 79837-th centered octagonal number.

It is an amenable number.

25495466929 is a deficient number, since it is larger than the sum of its proper divisors (159674).

25495466929 is an frugal number, since it uses more digits than its factorization.

25495466929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319346 (or 159673 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 61.

The spelling of 25495466929 in words is "twenty-five billion, four hundred ninety-five million, four hundred sixty-six thousand, nine hundred twenty-nine".