125731401 has 8 divisors (see below), whose sum is σ = 167693664. Its totient is φ = 83795040.

The previous prime is 125731357. The next prime is 125731427. The reversal of 125731401 is 104137521.

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

It is not a de Polignac number, because 125731401 - 2¹⁰ = 125730377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125731601) 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, 16021 + ... + 22541.

It is an arithmetic number, because the mean of its divisors is an integer number (20961708).

Almost surely, 2^125731401 is an apocalyptic number.

It is an amenable number.

125731401 is a deficient number, since it is larger than the sum of its proper divisors (41962263).

125731401 is an equidigital number, since it uses as much as digits as its factorization.

125731401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12951.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 125731401 is about 11213.0014269151. The cubic root of 125731401 is about 500.9733054569.

Adding to 125731401 its reverse (104137521), we get a palindrome (229868922).

The spelling of 125731401 in words is "one hundred twenty-five million, seven hundred thirty-one thousand, four hundred one".