31249442425 has 12 divisors (see below), whose sum is σ = 39796588396. Its totient is φ = 24323889600.

The previous prime is 31249442353. The next prime is 31249442431. The reversal of 31249442425 is 52424494213.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4531578489 + 26717863936 = 67317^2 + 163456^2 .

It is not a de Polignac number, because 31249442425 - 2¹¹ = 31249440377 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 (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16890666 + ... + 16892515.

Almost surely, 2^31249442425 is an apocalyptic number.

It is an amenable number.

31249442425 is a deficient number, since it is larger than the sum of its proper divisors (8547145971).

31249442425 is a wasteful number, since it uses less digits than its factorization.

31249442425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33783228 (or 33783223 counting only the distinct ones).

The product of its digits is 276480, while the sum is 40.

The spelling of 31249442425 in words is "thirty-one billion, two hundred forty-nine million, four hundred forty-two thousand, four hundred twenty-five".