642241113425 has 24 divisors (see below), whose sum is σ = 843985769400. Its totient is φ = 483133383680.

The previous prime is 642241113377. The next prime is 642241113469. The reversal of 642241113425 is 524311142246.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 240954338641 + 401286774784 = 490871^2 + 633472^2 .

It is not a de Polignac number, because 642241113425 - 2⁶ = 642241113361 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209990 + ... + 1152639.

It is an arithmetic number, because the mean of its divisors is an integer number (35166073725).

Almost surely, 2^642241113425 is an apocalyptic number.

It is an amenable number.

642241113425 is a deficient number, since it is larger than the sum of its proper divisors (201744655975).

642241113425 is a wasteful number, since it uses less digits than its factorization.

642241113425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363765 (or 1363760 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The spelling of 642241113425 in words is "six hundred forty-two billion, two hundred forty-one million, one hundred thirteen thousand, four hundred twenty-five".