25973156425 has 12 divisors (see below), whose sum is σ = 32209685596. Its totient is φ = 20776608000.

The previous prime is 25973156317. The next prime is 25973156449. The reversal of 25973156425 is 52465137952.

It can be written as a sum of positive squares in 6 ways, for example, as 423371776 + 25549784649 = 20576^2 + 159843^2 .

It is not a de Polignac number, because 25973156425 - 2³¹ = 23825672777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269725 + ... + 353125.

Almost surely, 2^25973156425 is an apocalyptic number.

25973156425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25973156425 is a deficient number, since it is larger than the sum of its proper divisors (6236529171).

25973156425 is a wasteful number, since it uses less digits than its factorization.

25973156425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95868 (or 95863 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 49.

The spelling of 25973156425 in words is "twenty-five billion, nine hundred seventy-three million, one hundred fifty-six thousand, four hundred twenty-five".