125641619 has 2 divisors, whose sum is σ = 125641620. Its totient is φ = 125641618.

The previous prime is 125641609. The next prime is 125641673. The reversal of 125641619 is 916146521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125641619 - 2¹⁶ = 125576083 is a prime.

It is a super-3 number, since 3×125641619³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (125641609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62820809 + 62820810.

It is an arithmetic number, because the mean of its divisors is an integer number (62820810).

Almost surely, 2^125641619 is an apocalyptic number.

125641619 is a deficient number, since it is larger than the sum of its proper divisors (1).

125641619 is an equidigital number, since it uses as much as digits as its factorization.

125641619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 125641619 is about 11208.9972343649. The cubic root of 125641619 is about 500.8540324267.

It can be divided in two parts, 1256 and 41619, that added together give a cube (42875 = 35³).

The spelling of 125641619 in words is "one hundred twenty-five million, six hundred forty-one thousand, six hundred nineteen".