125553044015 has 16 divisors (see below), whose sum is σ = 172501842432. Its totient is φ = 85936110624.

The previous prime is 125553043963. The next prime is 125553044033. The reversal of 125553044015 is 510440355521.

It is not a de Polignac number, because 125553044015 - 2¹⁴ = 125553027631 is a prime.

It is a super-2 number, since 2×125553044015² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3259859 + ... + 3298148.

It is an arithmetic number, because the mean of its divisors is an integer number (10781365152).

Almost surely, 2^125553044015 is an apocalyptic number.

125553044015 is a deficient number, since it is larger than the sum of its proper divisors (46948798417).

125553044015 is an equidigital number, since it uses as much as digits as its factorization.

125553044015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6558566.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 125553044015 its reverse (510440355521), we get a palindrome (635993399536).

The spelling of 125553044015 in words is "one hundred twenty-five billion, five hundred fifty-three million, forty-four thousand, fifteen".