125446658399 has 16 divisors (see below), whose sum is σ = 131300831520. Its totient is φ = 119723310720.

The previous prime is 125446658341. The next prime is 125446658413. The reversal of 125446658399 is 993856644521.

It is a cyclic number.

It is not a de Polignac number, because 125446658399 - 2¹⁶ = 125446592863 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 (125446658899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15348584 + ... + 15356754.

It is an arithmetic number, because the mean of its divisors is an integer number (8206301970).

Almost surely, 2^125446658399 is an apocalyptic number.

125446658399 is a deficient number, since it is larger than the sum of its proper divisors (5854173121).

125446658399 is an equidigital number, since it uses as much as digits as its factorization.

125446658399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16090.

The product of its digits is 55987200, while the sum is 62.

The spelling of 125446658399 in words is "one hundred twenty-five billion, four hundred forty-six million, six hundred fifty-eight thousand, three hundred ninety-nine".