125449129 has 8 divisors (see below), whose sum is σ = 138750920. Its totient is φ = 112669056.

The previous prime is 125449127. The next prime is 125449133. The reversal of 125449129 is 921944521.

It can be written as a sum of positive squares in 4 ways, for example, as 21409129 + 104040000 = 4627^2 + 10200^2 .

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 125449129 - 2¹ = 125449127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125449127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129924 + ... + 130885.

It is an arithmetic number, because the mean of its divisors is an integer number (17343865).

Almost surely, 2^125449129 is an apocalyptic number.

It is an amenable number.

125449129 is a deficient number, since it is larger than the sum of its proper divisors (13301791).

125449129 is a wasteful number, since it uses less digits than its factorization.

125449129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260859.

The product of its digits is 25920, while the sum is 37.

The square root of 125449129 is about 11200.4075372283. The cubic root of 125449129 is about 500.5981228794.

The spelling of 125449129 in words is "one hundred twenty-five million, four hundred forty-nine thousand, one hundred twenty-nine".