125501611 has 4 divisors (see below), whose sum is σ = 125599672. Its totient is φ = 125403552.

The previous prime is 125501603. The next prime is 125501627. The reversal of 125501611 is 116105521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 116105521 = 7 ⋅16586503.

It is a cyclic number.

It is not a de Polignac number, because 125501611 - 2³ = 125501603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125501641) 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, 47085 + ... + 49678.

It is an arithmetic number, because the mean of its divisors is an integer number (31399918).

Almost surely, 2^125501611 is an apocalyptic number.

125501611 is a deficient number, since it is larger than the sum of its proper divisors (98061).

125501611 is an equidigital number, since it uses as much as digits as its factorization.

125501611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98060.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 125501611 is about 11202.7501534221. The cubic root of 125501611 is about 500.6679220297.

It can be divided in two parts, 12550 and 1611, that added together give a square (14161 = 119²).

The spelling of 125501611 in words is "one hundred twenty-five million, five hundred one thousand, six hundred eleven".