125011399 has 8 divisors (see below), whose sum is σ = 127899648. Its totient is φ = 122132760.

The previous prime is 125011379. The next prime is 125011429. The reversal of 125011399 is 993110521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 125011399 - 2⁹ = 125010887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125011399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125011379) 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, 28354 + ... + 32464.

It is an arithmetic number, because the mean of its divisors is an integer number (15987456).

Almost surely, 2^125011399 is an apocalyptic number.

125011399 is a deficient number, since it is larger than the sum of its proper divisors (2888249).

125011399 is an equidigital number, since it uses as much as digits as its factorization.

125011399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4805.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 125011399 is about 11180.8496546551. The cubic root of 125011399 is about 500.0151982047.

The spelling of 125011399 in words is "one hundred twenty-five million, eleven thousand, three hundred ninety-nine".