125520161415 has 256 divisors, whose sum is σ = 248619663360. Its totient is φ = 53374464000.

The previous prime is 125520161407. The next prime is 125520161443. The reversal of 125520161415 is 514161025521.

It is a happy number.

It is not a de Polignac number, because 125520161415 - 2³ = 125520161407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 240921355 + ... + 240921875.

It is an arithmetic number, because the mean of its divisors is an integer number (971170560).

Almost surely, 2^125520161415 is an apocalyptic number.

125520161415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125520161415 is a deficient number, since it is larger than the sum of its proper divisors (123099501945).

125520161415 is a wasteful number, since it uses less digits than its factorization.

125520161415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694.

The product of its (nonzero) digits is 12000, while the sum is 33.

Adding to 125520161415 its reverse (514161025521), we get a palindrome (639681186936).

The spelling of 125520161415 in words is "one hundred twenty-five billion, five hundred twenty million, one hundred sixty-one thousand, four hundred fifteen".