126191425 has 12 divisors (see below), whose sum is σ = 165682476. Its totient is φ = 95014400.

The previous prime is 126191327. The next prime is 126191437. The reversal of 126191425 is 524191621.

It can be written as a sum of positive squares in 6 ways, for example, as 7795264 + 118396161 = 2792^2 + 10881^2 .

It is not a de Polignac number, because 126191425 - 2²⁵ = 92636993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148036 + ... + 148885.

It is an arithmetic number, because the mean of its divisors is an integer number (13806873).

Almost surely, 2^126191425 is an apocalyptic number.

It is an amenable number.

126191425 is a deficient number, since it is larger than the sum of its proper divisors (39491051).

126191425 is a wasteful number, since it uses less digits than its factorization.

126191425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296948 (or 296943 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 126191425 is about 11233.4956714284. The cubic root of 126191425 is about 501.5835461354.

The spelling of 126191425 in words is "one hundred twenty-six million, one hundred ninety-one thousand, four hundred twenty-five".