10125634399 has 4 divisors (see below), whose sum is σ = 10268249040. Its totient is φ = 9983019760.

The previous prime is 10125634381. The next prime is 10125634417. The reversal of 10125634399 is 99343652101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99343652101 = 14149 ⋅7021249.

It is an interprime number because it is at equal distance from previous prime (10125634381) and next prime (10125634417).

It is a cyclic number.

It is not a de Polignac number, because 10125634399 - 2²⁵ = 10092079967 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 (10125634319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71307214 + ... + 71307355.

It is an arithmetic number, because the mean of its divisors is an integer number (2567062260).

Almost surely, 2^10125634399 is an apocalyptic number.

10125634399 is a deficient number, since it is larger than the sum of its proper divisors (142614641).

10125634399 is an equidigital number, since it uses as much as digits as its factorization.

10125634399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142614640.

The product of its (nonzero) digits is 174960, while the sum is 43.

The spelling of 10125634399 in words is "ten billion, one hundred twenty-five million, six hundred thirty-four thousand, three hundred ninety-nine".