125002135 has 4 divisors (see below), whose sum is σ = 150002568. Its totient is φ = 100001704.

The previous prime is 125002123. The next prime is 125002183. The reversal of 125002135 is 531200521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125002135 - 2¹⁵ = 124969367 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 12500209 + ... + 12500218.

It is an arithmetic number, because the mean of its divisors is an integer number (37500642).

Almost surely, 2^125002135 is an apocalyptic number.

125002135 is a deficient number, since it is larger than the sum of its proper divisors (25000433).

125002135 is an equidigital number, since it uses as much as digits as its factorization.

125002135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25000432.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 125002135 is about 11180.4353671939. The cubic root of 125002135 is about 500.0028466505.

Adding to 125002135 its reverse (531200521), we get a palindrome (656202656).

The spelling of 125002135 in words is "one hundred twenty-five million, two thousand, one hundred thirty-five".