125440507 has 8 divisors (see below), whose sum is σ = 127102976. Its totient is φ = 123786792.

The previous prime is 125440493. The next prime is 125440519. The reversal of 125440507 is 705044521.

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 125440507 - 2¹¹ = 125438459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125440537) 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 7 ways as a sum of consecutive naturals, for example, 29638 + ... + 33604.

It is an arithmetic number, because the mean of its divisors is an integer number (15887872).

Almost surely, 2^125440507 is an apocalyptic number.

125440507 is a deficient number, since it is larger than the sum of its proper divisors (1662469).

125440507 is a wasteful number, since it uses less digits than its factorization.

125440507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4377.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 125440507 is about 11200.0226339057. The cubic root of 125440507 is about 500.5866540715.

The spelling of 125440507 in words is "one hundred twenty-five million, four hundred forty thousand, five hundred seven".