125000641 has 4 divisors (see below), whose sum is σ = 125025412. Its totient is φ = 124975872.

The previous prime is 125000633. The next prime is 125000657. The reversal of 125000641 is 146000521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146000521 = 1327 ⋅110023.

It can be written as a sum of positive squares in 2 ways, for example, as 122567041 + 2433600 = 11071^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 125000641 - 2³ = 125000633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125000741) 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, 1800 + ... + 15913.

It is an arithmetic number, because the mean of its divisors is an integer number (31256353).

Almost surely, 2^125000641 is an apocalyptic number.

It is an amenable number.

125000641 is a deficient number, since it is larger than the sum of its proper divisors (24771).

125000641 is an equidigital number, since it uses as much as digits as its factorization.

125000641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24770.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 125000641 is about 11180.3685538537. The cubic root of 125000641 is about 500.0008546652. Note that the first 3 decimals are identical.

The spelling of 125000641 in words is "one hundred twenty-five million, six hundred forty-one", and thus it is an aban number.