125971197 has 32 divisors (see below), whose sum is σ = 199127040. Its totient is φ = 69984000.

The previous prime is 125971193. The next prime is 125971211. The reversal of 125971197 is 791179521.

It is not a de Polignac number, because 125971197 - 2² = 125971193 is a prime.

It is a super-2 number, since 2×125971197² = 31737484947225618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125971193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16197 + ... + 22677.

It is an arithmetic number, because the mean of its divisors is an integer number (6222720).

Almost surely, 2^125971197 is an apocalyptic number.

It is an amenable number.

125971197 is a deficient number, since it is larger than the sum of its proper divisors (73155843).

125971197 is a wasteful number, since it uses less digits than its factorization.

125971197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6545.

The product of its digits is 39690, while the sum is 42.

The square root of 125971197 is about 11223.6890994004. The cubic root of 125971197 is about 501.2915900508.

The spelling of 125971197 in words is "one hundred twenty-five million, nine hundred seventy-one thousand, one hundred ninety-seven".