125095921 has 4 divisors (see below), whose sum is σ = 126243700. Its totient is φ = 123948144.

The previous prime is 125095913. The next prime is 125095963. The reversal of 125095921 is 129590521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 91872225 + 33223696 = 9585^2 + 5764^2 .

It is a cyclic number.

It is not a de Polignac number, because 125095921 - 2³ = 125095913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125095991) 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, 573726 + ... + 573943.

It is an arithmetic number, because the mean of its divisors is an integer number (31560925).

Almost surely, 2^125095921 is an apocalyptic number.

It is an amenable number.

125095921 is a deficient number, since it is larger than the sum of its proper divisors (1147779).

125095921 is a wasteful number, since it uses less digits than its factorization.

125095921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147778.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 125095921 is about 11184.6287823960. The cubic root of 125095921 is about 500.1278619665.

The spelling of 125095921 in words is "one hundred twenty-five million, ninety-five thousand, nine hundred twenty-one".