499890225157 has 2 divisors, whose sum is σ = 499890225158. Its totient is φ = 499890225156.

The previous prime is 499890225073. The next prime is 499890225229. The reversal of 499890225157 is 751522098994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312988778116 + 186901447041 = 559454^2 + 432321^2 .

It is a cyclic number.

It is not a de Polignac number, because 499890225157 - 2²³ = 499881836549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 499890225095 and 499890225104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499890228157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249945112578 + 249945112579.

It is an arithmetic number, because the mean of its divisors is an integer number (249945112579).

Almost surely, 2^499890225157 is an apocalyptic number.

It is an amenable number.

499890225157 is a deficient number, since it is larger than the sum of its proper divisors (1).

499890225157 is an equidigital number, since it uses as much as digits as its factorization.

499890225157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16329600, while the sum is 61.

The spelling of 499890225157 in words is "four hundred ninety-nine billion, eight hundred ninety million, two hundred twenty-five thousand, one hundred fifty-seven".