125520340515 has 32 divisors (see below), whose sum is σ = 201497716992. Its totient is φ = 66722832000.

The previous prime is 125520340511. The next prime is 125520340537. The reversal of 125520340515 is 515043025521.

It is not a de Polignac number, because 125520340515 - 2² = 125520340511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125520340511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5650380 + ... + 5672550.

It is an arithmetic number, because the mean of its divisors is an integer number (6296803656).

Almost surely, 2^125520340515 is an apocalyptic number.

125520340515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125520340515 is a deficient number, since it is larger than the sum of its proper divisors (75977376477).

125520340515 is a wasteful number, since it uses less digits than its factorization.

125520340515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23411.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 125520340515 in words is "one hundred twenty-five billion, five hundred twenty million, three hundred forty thousand, five hundred fifteen".