125152752779 has 2 divisors, whose sum is σ = 125152752780. Its totient is φ = 125152752778.

The previous prime is 125152752749. The next prime is 125152752799. The reversal of 125152752779 is 977257251521.

It is a strong prime.

It is an emirp because it is prime and its reverse (977257251521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125152752779 - 2¹² = 125152748683 is a prime.

It is a super-2 number, since 2×125152752779² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125152752779.

It is not a weakly prime, because it can be changed into another prime (125152752749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62576376389 + 62576376390.

It is an arithmetic number, because the mean of its divisors is an integer number (62576376390).

Almost surely, 2^125152752779 is an apocalyptic number.

125152752779 is a deficient number, since it is larger than the sum of its proper divisors (1).

125152752779 is an equidigital number, since it uses as much as digits as its factorization.

125152752779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3087000, while the sum is 53.

The spelling of 125152752779 in words is "one hundred twenty-five billion, one hundred fifty-two million, seven hundred fifty-two thousand, seven hundred seventy-nine".