125724605 has 8 divisors (see below), whose sum is σ = 159744312. Its totient is φ = 94663168.

The previous prime is 125724589. The next prime is 125724611. The reversal of 125724605 is 506427521.

It can be written as a sum of positive squares in 4 ways, for example, as 63409369 + 62315236 = 7963^2 + 7894^2 .

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 125724605 - 2⁴ = 125724589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739472 + ... + 739641.

It is an arithmetic number, because the mean of its divisors is an integer number (19968039).

Almost surely, 2^125724605 is an apocalyptic number.

It is an amenable number.

125724605 is a deficient number, since it is larger than the sum of its proper divisors (34019707).

125724605 is a wasteful number, since it uses less digits than its factorization.

125724605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479135.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 125724605 is about 11212.6983817456. The cubic root of 125724605 is about 500.9642791360.

The spelling of 125724605 in words is "one hundred twenty-five million, seven hundred twenty-four thousand, six hundred five".