125056399 has 8 divisors (see below), whose sum is σ = 135706032. Its totient is φ = 114553920.

The previous prime is 125056367. The next prime is 125056429. The reversal of 125056399 is 993650521.

It is a happy number.

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

It is not a de Polignac number, because 125056399 - 2⁵ = 125056367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125056699) 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, 35014 + ... + 38419.

It is an arithmetic number, because the mean of its divisors is an integer number (16963254).

Almost surely, 2^125056399 is an apocalyptic number.

125056399 is a deficient number, since it is larger than the sum of its proper divisors (10649633).

125056399 is a wasteful number, since it uses less digits than its factorization.

125056399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73577.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 125056399 is about 11182.8618430168. The cubic root of 125056399 is about 500.0751873598.

The spelling of 125056399 in words is "one hundred twenty-five million, fifty-six thousand, three hundred ninety-nine".