507225157507821 has 24 divisors (see below), whose sum is σ = 699473810220960. Its totient is φ = 326935915342560.

The previous prime is 507225157507777. The next prime is 507225157507837. The reversal of 507225157507821 is 128705751522705.

It is not a de Polignac number, because 507225157507821 - 2¹⁹ = 507225156983533 is a prime.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (507225157507021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79208335 + ... + 85372188.

It is an arithmetic number, because the mean of its divisors is an integer number (29144742092540).

Almost surely, 2^{507225157507821} is an apocalyptic number.

It is an amenable number.

507225157507821 is a deficient number, since it is larger than the sum of its proper divisors (192248652713139).

507225157507821 is a wasteful number, since it uses less digits than its factorization.

507225157507821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164581657 (or 164581626 counting only the distinct ones).

The product of its (nonzero) digits is 13720000, while the sum is 57.

The spelling of 507225157507821 in words is "five hundred seven trillion, two hundred twenty-five billion, one hundred fifty-seven million, five hundred seven thousand, eight hundred twenty-one".