125153779 has 16 divisors (see below), whose sum is σ = 142750080. Its totient is φ = 108984960.

The previous prime is 125153773. The next prime is 125153797. The reversal of 125153779 is 977351521.

It is not a de Polignac number, because 125153779 - 2⁹ = 125153267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125153773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9384 + ... + 18394.

It is an arithmetic number, because the mean of its divisors is an integer number (8921880).

Almost surely, 2^125153779 is an apocalyptic number.

125153779 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

125153779 is a deficient number, since it is larger than the sum of its proper divisors (17596301).

125153779 is a wasteful number, since it uses less digits than its factorization.

125153779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9090.

The product of its digits is 66150, while the sum is 40.

The square root of 125153779 is about 11187.2149796095. The cubic root of 125153779 is about 500.2049546424.

The spelling of 125153779 in words is "one hundred twenty-five million, one hundred fifty-three thousand, seven hundred seventy-nine".