125522404015 has 4 divisors (see below), whose sum is σ = 150626884824. Its totient is φ = 100417923208.

The previous prime is 125522404013. The next prime is 125522404037. The reversal of 125522404015 is 510404225521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 510404225521 = 163 ⋅3131314267.

It is a cyclic number.

It is not a de Polignac number, because 125522404015 - 2¹ = 125522404013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125522404013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12552240397 + ... + 12552240406.

It is an arithmetic number, because the mean of its divisors is an integer number (37656721206).

Almost surely, 2^125522404015 is an apocalyptic number.

125522404015 is a deficient number, since it is larger than the sum of its proper divisors (25104480809).

125522404015 is an equidigital number, since it uses as much as digits as its factorization.

125522404015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25104480808.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 125522404015 its reverse (510404225521), we get a palindrome (635926629536).

The spelling of 125522404015 in words is "one hundred twenty-five billion, five hundred twenty-two million, four hundred four thousand, fifteen".