125579502553 has 2 divisors, whose sum is σ = 125579502554. Its totient is φ = 125579502552.

The previous prime is 125579502541. The next prime is 125579502611. The reversal of 125579502553 is 355205975521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106192560384 + 19386942169 = 325872^2 + 139237^2 .

It is an emirp because it is prime and its reverse (355205975521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125579502553 is a prime.

It is a super-2 number, since 2×125579502553² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125579502497 and 125579502506.

It is not a weakly prime, because it can be changed into another prime (125579508553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62789751276 + 62789751277.

It is an arithmetic number, because the mean of its divisors is an integer number (62789751277).

Almost surely, 2^125579502553 is an apocalyptic number.

It is an amenable number.

125579502553 is a deficient number, since it is larger than the sum of its proper divisors (1).

125579502553 is an equidigital number, since it uses as much as digits as its factorization.

125579502553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2362500, while the sum is 49.

The spelling of 125579502553 in words is "one hundred twenty-five billion, five hundred seventy-nine million, five hundred two thousand, five hundred fifty-three".