129154983625 has 72 divisors (see below), whose sum is σ = 171718789320. Its totient is φ = 96869707200.

The previous prime is 129154983589. The next prime is 129154983647. The reversal of 129154983625 is 526389451921.

It can be written as a sum of positive squares in 4 ways, for example, as 5130570384 + 124024413241 = 71628^2 + 352171^2 .

It is not a de Polignac number, because 129154983625 - 2⁷ = 129154983497 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1016968312 + ... + 1016968438.

It is an arithmetic number, because the mean of its divisors is an integer number (2384983185).

Almost surely, 2^129154983625 is an apocalyptic number.

It is an amenable number.

129154983625 is a deficient number, since it is larger than the sum of its proper divisors (42563805695).

129154983625 is an frugal number, since it uses more digits than its factorization.

129154983625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 208 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 55.

The spelling of 129154983625 in words is "one hundred twenty-nine billion, one hundred fifty-four million, nine hundred eighty-three thousand, six hundred twenty-five".