125515122301 has 16 divisors (see below), whose sum is σ = 128987059824. Its totient is φ = 122099318784.

The previous prime is 125515122277. The next prime is 125515122307. The reversal of 125515122301 is 103221515521.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 34326825625 + 91188296676 = 185275^2 + 301974^2 .

It is a de Polignac number, because none of the positive numbers 2^k-125515122301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125515122301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125515122307) 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, 2044485 + ... + 2104981.

It is an arithmetic number, because the mean of its divisors is an integer number (8061691239).

Almost surely, 2^125515122301 is an apocalyptic number.

It is an amenable number.

125515122301 is a deficient number, since it is larger than the sum of its proper divisors (3471937523).

125515122301 is an equidigital number, since it uses as much as digits as its factorization.

125515122301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60960.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 125515122301 its reverse (103221515521), we get a palindrome (228736637822).

The spelling of 125515122301 in words is "one hundred twenty-five billion, five hundred fifteen million, one hundred twenty-two thousand, three hundred one".