12451553425 has 24 divisors (see below), whose sum is σ = 16033270680. Its totient is φ = 9585100800.

The previous prime is 12451553417. The next prime is 12451553431. The reversal of 12451553425 is 52435515421.

It can be written as a sum of positive squares in 12 ways, for example, as 9465149521 + 2986403904 = 97289^2 + 54648^2 .

It is not a de Polignac number, because 12451553425 - 2³ = 12451553417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8380 + ... + 158029.

It is an arithmetic number, because the mean of its divisors is an integer number (668052945).

Almost surely, 2^12451553425 is an apocalyptic number.

It is an amenable number.

12451553425 is a deficient number, since it is larger than the sum of its proper divisors (3581717255).

12451553425 is a wasteful number, since it uses less digits than its factorization.

12451553425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166533 (or 166528 counting only the distinct ones).

The product of its digits is 120000, while the sum is 37.

The spelling of 12451553425 in words is "twelve billion, four hundred fifty-one million, five hundred fifty-three thousand, four hundred twenty-five".