125403611 has 4 divisors (see below), whose sum is σ = 132780312. Its totient is φ = 118026912.

The previous prime is 125403601. The next prime is 125403643. The reversal of 125403611 is 116304521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125403611 - 2⁶ = 125403547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125403601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3688325 + ... + 3688358.

It is an arithmetic number, because the mean of its divisors is an integer number (33195078).

Almost surely, 2^125403611 is an apocalyptic number.

125403611 is a deficient number, since it is larger than the sum of its proper divisors (7376701).

125403611 is an equidigital number, since it uses as much as digits as its factorization.

125403611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7376700.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 125403611 is about 11198.3753732405. The cubic root of 125403611 is about 500.5375698302.

The spelling of 125403611 in words is "one hundred twenty-five million, four hundred three thousand, six hundred eleven".