525146621242 has 4 divisors (see below), whose sum is σ = 787719931866. Its totient is φ = 262573310620.

The previous prime is 525146621227. The next prime is 525146621243. The reversal of 525146621242 is 242126641525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 525145159561 + 1461681 = 724669^2 + 1209^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 525146621195 and 525146621204.

It is not an unprimeable number, because it can be changed into a prime (525146621243) by changing a digit.

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 as a sum of consecutive naturals, namely, 131286655309 + ... + 131286655312.

Almost surely, 2^525146621242 is an apocalyptic number.

525146621242 is a deficient number, since it is larger than the sum of its proper divisors (262573310624).

525146621242 is a wasteful number, since it uses less digits than its factorization.

525146621242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262573310623.

The product of its digits is 230400, while the sum is 40.

The spelling of 525146621242 in words is "five hundred twenty-five billion, one hundred forty-six million, six hundred twenty-one thousand, two hundred forty-two".