125415142505 has 8 divisors (see below), whose sum is σ = 150501236424. Its totient is φ = 100330070400.

The previous prime is 125415142499. The next prime is 125415142507. The reversal of 125415142505 is 505241514521.

It can be written as a sum of positive squares in 4 ways, for example, as 37199608384 + 88215534121 = 192872^2 + 297011^2 .

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

It is not a de Polignac number, because 125415142505 - 2²⁰ = 125414093929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125415142507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47165 + ... + 503045.

It is an arithmetic number, because the mean of its divisors is an integer number (18812654553).

Almost surely, 2^125415142505 is an apocalyptic number.

It is an amenable number.

125415142505 is a deficient number, since it is larger than the sum of its proper divisors (25086093919).

125415142505 is an equidigital number, since it uses as much as digits as its factorization.

125415142505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510907.

The product of its (nonzero) digits is 40000, while the sum is 35.

The spelling of 125415142505 in words is "one hundred twenty-five billion, four hundred fifteen million, one hundred forty-two thousand, five hundred five".