125194981 has 8 divisors (see below), whose sum is σ = 128016000. Its totient is φ = 122380608.

The previous prime is 125194967. The next prime is 125194999. The reversal of 125194981 is 189491521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125194981 is a prime.

It is a super-2 number, since 2×125194981² = 31347566535180722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125194481) 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, 69565 + ... + 71341.

It is an arithmetic number, because the mean of its divisors is an integer number (16002000).

Almost surely, 2^125194981 is an apocalyptic number.

It is an amenable number.

125194981 is a deficient number, since it is larger than the sum of its proper divisors (2821019).

125194981 is a wasteful number, since it uses less digits than its factorization.

125194981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323.

The product of its digits is 25920, while the sum is 40.

The square root of 125194981 is about 11189.0563051582. The cubic root of 125194981 is about 500.2598396100.

The spelling of 125194981 in words is "one hundred twenty-five million, one hundred ninety-four thousand, nine hundred eighty-one".