125917801 has 4 divisors (see below), whose sum is σ = 131392512. Its totient is φ = 120443092.

The previous prime is 125917787. The next prime is 125917819. The reversal of 125917801 is 108719521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125917801 - 2¹⁵ = 125885033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125917871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2737321 + ... + 2737366.

It is an arithmetic number, because the mean of its divisors is an integer number (32848128).

Almost surely, 2^125917801 is an apocalyptic number.

It is an amenable number.

125917801 is a deficient number, since it is larger than the sum of its proper divisors (5474711).

125917801 is an equidigital number, since it uses as much as digits as its factorization.

125917801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474710.

The product of its (nonzero) digits is 5040, while the sum is 34.

The square root of 125917801 is about 11221.3101285010. The cubic root of 125917801 is about 501.2207517713.

The spelling of 125917801 in words is "one hundred twenty-five million, nine hundred seventeen thousand, eight hundred one".