42309963925 has 6 divisors (see below), whose sum is σ = 52464355298. Its totient is φ = 33847971120.

The previous prime is 42309963893. The next prime is 42309963929. The reversal of 42309963925 is 52936990324.

It can be written as a sum of positive squares in 3 ways, for example, as 712729809 + 41597234116 = 26697^2 + 203954^2 .

It is not a de Polignac number, because 42309963925 - 2⁵ = 42309963893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42309963929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 846199254 + ... + 846199303.

Almost surely, 2^42309963925 is an apocalyptic number.

It is an amenable number.

42309963925 is a deficient number, since it is larger than the sum of its proper divisors (10154391373).

42309963925 is a wasteful number, since it uses less digits than its factorization.

42309963925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692398567 (or 1692398562 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 52.

The spelling of 42309963925 in words is "forty-two billion, three hundred nine million, nine hundred sixty-three thousand, nine hundred twenty-five".