125561045099 has 8 divisors (see below), whose sum is σ = 143537392608. Its totient is φ = 107594461440.

The previous prime is 125561045089. The next prime is 125561045117. The reversal of 125561045099 is 990540165521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125561045099 is a prime.

It is a super-2 number, since 2×125561045099² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125561045089) 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, 2413382 + ... + 2464859.

It is an arithmetic number, because the mean of its divisors is an integer number (17942174076).

Almost surely, 2^125561045099 is an apocalyptic number.

125561045099 is a deficient number, since it is larger than the sum of its proper divisors (17976347509).

125561045099 is an equidigital number, since it uses as much as digits as its factorization.

125561045099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4881925.

The product of its (nonzero) digits is 486000, while the sum is 47.

The spelling of 125561045099 in words is "one hundred twenty-five billion, five hundred sixty-one million, forty-five thousand, ninety-nine".