129141525 has 12 divisors (see below), whose sum is σ = 213514112. Its totient is φ = 68875440.

The previous prime is 129141521. The next prime is 129141533. The reversal of 129141525 is 525141921.

It is not a de Polignac number, because 129141525 - 2² = 129141521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129141492 and 129141501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129141521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 860869 + ... + 861018.

Almost surely, 2^129141525 is an apocalyptic number.

129141525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129141525 is a deficient number, since it is larger than the sum of its proper divisors (84372587).

129141525 is a wasteful number, since it uses less digits than its factorization.

129141525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721900 (or 1721895 counting only the distinct ones).

The product of its digits is 3600, while the sum is 30.

The square root of 129141525 is about 11364.0452744610. The cubic root of 129141525 is about 505.4621459717.

The spelling of 129141525 in words is "one hundred twenty-nine million, one hundred forty-one thousand, five hundred twenty-five".