125640357 has 8 divisors (see below), whose sum is σ = 168240384. Its totient is φ = 83400288.

The previous prime is 125640313. The next prime is 125640377. The reversal of 125640357 is 753046521.

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

It is not a de Polignac number, because 125640357 - 2¹⁶ = 125574821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125640377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89173 + ... + 90570.

It is an arithmetic number, because the mean of its divisors is an integer number (21030048).

Almost surely, 2^125640357 is an apocalyptic number.

It is an amenable number.

125640357 is a deficient number, since it is larger than the sum of its proper divisors (42600027).

125640357 is a wasteful number, since it uses less digits than its factorization.

125640357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179979.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 125640357 is about 11208.9409401602. The cubic root of 125640357 is about 500.8523554879.

Adding to 125640357 its reverse (753046521), we get a palindrome (878686878).

The spelling of 125640357 in words is "one hundred twenty-five million, six hundred forty thousand, three hundred fifty-seven".