125217538 has 8 divisors (see below), whose sum is σ = 188261388. Its totient is φ = 62463744.

The previous prime is 125217511. The next prime is 125217539. The reversal of 125217538 is 835712521.

It can be written as a sum of positive squares in 2 ways, for example, as 100942209 + 24275329 = 10047^2 + 4927^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (125217539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71431 + ... + 73162.

Almost surely, 2^125217538 is an apocalyptic number.

125217538 is a deficient number, since it is larger than the sum of its proper divisors (63043850).

125217538 is a wasteful number, since it uses less digits than its factorization.

125217538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145028.

The product of its digits is 16800, while the sum is 34.

The square root of 125217538 is about 11190.0642536136. The cubic root of 125217538 is about 500.2898825704.

The spelling of 125217538 in words is "one hundred twenty-five million, two hundred seventeen thousand, five hundred thirty-eight".