125535001 has 2 divisors, whose sum is σ = 125535002. Its totient is φ = 125535000.

The previous prime is 125534999. The next prime is 125535023. The reversal of 125535001 is 100535521.

It is an a-pointer prime, because the next prime (125535023) can be obtained adding 125535001 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124902976 + 632025 = 11176^2 + 795^2 .

It is an emirp because it is prime and its reverse (100535521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125535001 - 2¹ = 125534999 is a prime.

Together with 125534999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125535031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62767500 + 62767501.

It is an arithmetic number, because the mean of its divisors is an integer number (62767501).

Almost surely, 2^125535001 is an apocalyptic number.

It is an amenable number.

125535001 is a deficient number, since it is larger than the sum of its proper divisors (1).

125535001 is an equidigital number, since it uses as much as digits as its factorization.

125535001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 125535001 is about 11204.2403133814. The cubic root of 125535001 is about 500.7123193869.

The spelling of 125535001 in words is "one hundred twenty-five million, five hundred thirty-five thousand, one".