129458125 has 20 divisors (see below), whose sum is σ = 163422688. Its totient is φ = 102510000.

The previous prime is 129458113. The next prime is 129458143. The reversal of 129458125 is 521854921.

It is not a de Polignac number, because 129458125 - 2⁵ = 129458093 is a prime.

It is a super-2 number, since 2×129458125² = 33518812257031250, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 63370 + ... + 65380.

Almost surely, 2^129458125 is an apocalyptic number.

It is an amenable number.

129458125 is a deficient number, since it is larger than the sum of its proper divisors (33964563).

129458125 is an equidigital number, since it uses as much as digits as its factorization.

129458125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134 (or 2119 counting only the distinct ones).

The product of its digits is 28800, while the sum is 37.

The square root of 129458125 is about 11377.9666461104. The cubic root of 129458125 is about 505.8748681607.

The spelling of 129458125 in words is "one hundred twenty-nine million, four hundred fifty-eight thousand, one hundred twenty-five".