125035239649 has 8 divisors (see below), whose sum is σ = 133121694888. Its totient is φ = 117030055680.

The previous prime is 125035239629. The next prime is 125035239701. The reversal of 125035239649 is 946932530521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 35215149649 + 89820090000 = 187657^2 + 299700^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125035239649 - 2⁷ = 125035239521 is a prime.

It is a super-2 number, since 2×125035239649² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125035239629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20314642 + ... + 20320795.

It is an arithmetic number, because the mean of its divisors is an integer number (16640211861).

Almost surely, 2^125035239649 is an apocalyptic number.

It is an amenable number.

125035239649 is a deficient number, since it is larger than the sum of its proper divisors (8086455239).

125035239649 is a wasteful number, since it uses less digits than its factorization.

125035239649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40635635.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 125035239649 in words is "one hundred twenty-five billion, thirty-five million, two hundred thirty-nine thousand, six hundred forty-nine".