42366253525 has 18 divisors (see below), whose sum is σ = 53029568130. Its totient is φ = 33573540960.

The previous prime is 42366253511. The next prime is 42366253541. The reversal of 42366253525 is 52535266324.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5037308676 + 37328944849 = 70974^2 + 193207^2 .

It is not a de Polignac number, because 42366253525 - 2⁵ = 42366253493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10742704 + ... + 10746646.

Almost surely, 2^42366253525 is an apocalyptic number.

It is an amenable number.

42366253525 is a deficient number, since it is larger than the sum of its proper divisors (10663314605).

42366253525 is an frugal number, since it uses more digits than its factorization.

42366253525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8005 (or 4057 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 43.

The spelling of 42366253525 in words is "forty-two billion, three hundred sixty-six million, two hundred fifty-three thousand, five hundred twenty-five".