125661867 has 8 divisors (see below), whose sum is σ = 171445824. Its totient is φ = 81826248.

The previous prime is 125661829. The next prime is 125661919. The reversal of 125661867 is 768166521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125661867 - 2¹¹ = 125659819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125661827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486933 + ... + 487190.

It is an arithmetic number, because the mean of its divisors is an integer number (21430728).

Almost surely, 2^125661867 is an apocalyptic number.

125661867 is a deficient number, since it is larger than the sum of its proper divisors (45783957).

125661867 is an equidigital number, since it uses as much as digits as its factorization.

125661867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974169.

The product of its digits is 120960, while the sum is 42.

The square root of 125661867 is about 11209.9004009848. The cubic root of 125661867 is about 500.8809363242.

The spelling of 125661867 in words is "one hundred twenty-five million, six hundred sixty-one thousand, eight hundred sixty-seven".