31425456615625 has 24 divisors (see below), whose sum is σ = 39281019275736. Its totient is φ = 25139269200000.

The previous prime is 31425456615613. The next prime is 31425456615643. The reversal of 31425456615625 is 52651665452413.

It can be written as a sum of positive squares in 12 ways, for example, as 29482521707961 + 1942934907664 = 5429781^2 + 1393892^2 .

It is not a de Polignac number, because 31425456615625 - 2³³ = 31416866681033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 75671047 + ... + 76085203.

It is an arithmetic number, because the mean of its divisors is an integer number (1636709136489).

Almost surely, 2^{31425456615625} is an apocalyptic number.

It is an amenable number.

31425456615625 is a deficient number, since it is larger than the sum of its proper divisors (7855562660111).

31425456615625 is an frugal number, since it uses more digits than its factorization.

31425456615625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438463 (or 438443 counting only the distinct ones).

The product of its digits is 25920000, while the sum is 55.

The spelling of 31425456615625 in words is "thirty-one trillion, four hundred twenty-five billion, four hundred fifty-six million, six hundred fifteen thousand, six hundred twenty-five".