125215415129 has 16 divisors (see below), whose sum is σ = 143406199680. Its totient is φ = 107100489600.

The previous prime is 125215415123. The next prime is 125215415137. The reversal of 125215415129 is 921514512521.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 125215415129 - 2⁴ = 125215415113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125215415092 and 125215415101.

It is not an unprimeable number, because it can be changed into a prime (125215415123) 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, 20314202 + ... + 20320364.

It is an arithmetic number, because the mean of its divisors is an integer number (8962887480).

Almost surely, 2^125215415129 is an apocalyptic number.

It is an amenable number.

125215415129 is a deficient number, since it is larger than the sum of its proper divisors (18190784551).

125215415129 is an equidigital number, since it uses as much as digits as its factorization.

125215415129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11840.

The product of its digits is 36000, while the sum is 38.

The spelling of 125215415129 in words is "one hundred twenty-five billion, two hundred fifteen million, four hundred fifteen thousand, one hundred twenty-nine".