125554001 has 4 divisors (see below), whose sum is σ = 126255600. Its totient is φ = 124852404.

The previous prime is 125553997. The next prime is 125554019. The reversal of 125554001 is 100455521.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100455521 = 331 ⋅303491.

It is a cyclic number.

It is not a de Polignac number, because 125554001 - 2² = 125553997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125554201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350531 + ... + 350888.

It is an arithmetic number, because the mean of its divisors is an integer number (31563900).

Almost surely, 2^125554001 is an apocalyptic number.

It is an amenable number.

125554001 is a deficient number, since it is larger than the sum of its proper divisors (701599).

125554001 is an equidigital number, since it uses as much as digits as its factorization.

125554001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701598.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 125554001 is about 11205.0881745750. The cubic root of 125554001 is about 500.7375794182.

The spelling of 125554001 in words is "one hundred twenty-five million, five hundred fifty-four thousand, one".