129225151477 has 2 divisors, whose sum is σ = 129225151478. Its totient is φ = 129225151476.

The previous prime is 129225151423. The next prime is 129225151487. The reversal of 129225151477 is 774151522921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129225151441 + 36 = 359479^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 129225151477 - 2¹¹ = 129225149429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129225151417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64612575738 + 64612575739.

It is an arithmetic number, because the mean of its divisors is an integer number (64612575739).

Almost surely, 2^129225151477 is an apocalyptic number.

It is an amenable number.

129225151477 is a deficient number, since it is larger than the sum of its proper divisors (1).

129225151477 is an equidigital number, since it uses as much as digits as its factorization.

129225151477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 46.

The spelling of 129225151477 in words is "one hundred twenty-nine billion, two hundred twenty-five million, one hundred fifty-one thousand, four hundred seventy-seven".