15425116501 has 4 divisors (see below), whose sum is σ = 15957017100. Its totient is φ = 14893215904.

The previous prime is 15425116463. The next prime is 15425116523. The reversal of 15425116501 is 10561152451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3819363601 + 11605752900 = 61801^2 + 107730^2 .

It is a cyclic number.

It is not a de Polignac number, because 15425116501 - 2⁹ = 15425115989 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 (15425116601) 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, 265950256 + ... + 265950313.

It is an arithmetic number, because the mean of its divisors is an integer number (3989254275).

Almost surely, 2^15425116501 is an apocalyptic number.

It is an amenable number.

15425116501 is a deficient number, since it is larger than the sum of its proper divisors (531900599).

15425116501 is an equidigital number, since it uses as much as digits as its factorization.

15425116501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531900598.

The product of its (nonzero) digits is 6000, while the sum is 31.

Adding to 15425116501 its reverse (10561152451), we get a palindrome (25986268952).

The spelling of 15425116501 in words is "fifteen billion, four hundred twenty-five million, one hundred sixteen thousand, five hundred one".