42508417625 has 16 divisors (see below), whose sum is σ = 53070740112. Its totient is φ = 33993763200.

The previous prime is 42508417619. The next prime is 42508417663. The reversal of 42508417625 is 52671480524.

It can be written as a sum of positive squares in 8 ways, for example, as 19959190729 + 22549226896 = 141277^2 + 150164^2 .

It is not a de Polignac number, because 42508417625 - 2⁶ = 42508417561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271109 + ... + 398141.

It is an arithmetic number, because the mean of its divisors is an integer number (3316921257).

Almost surely, 2^42508417625 is an apocalyptic number.

It is an amenable number.

42508417625 is a deficient number, since it is larger than the sum of its proper divisors (10562322487).

42508417625 is a wasteful number, since it uses less digits than its factorization.

42508417625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129725 (or 129715 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 44.

The spelling of 42508417625 in words is "forty-two billion, five hundred eight million, four hundred seventeen thousand, six hundred twenty-five".