15121425245 has 4 divisors (see below), whose sum is σ = 18145710300. Its totient is φ = 12097140192.

The previous prime is 15121425229. The next prime is 15121425259. The reversal of 15121425245 is 54252412151.

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 8067273124 + 7054152121 = 89818^2 + 83989^2 .

It is a cyclic number.

It is not a de Polignac number, because 15121425245 - 2⁴ = 15121425229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512142520 + ... + 1512142529.

It is an arithmetic number, because the mean of its divisors is an integer number (4536427575).

Almost surely, 2^15121425245 is an apocalyptic number.

It is an amenable number.

15121425245 is a deficient number, since it is larger than the sum of its proper divisors (3024285055).

15121425245 is an equidigital number, since it uses as much as digits as its factorization.

15121425245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024285054.

The product of its digits is 16000, while the sum is 32.

Adding to 15121425245 its reverse (54252412151), we get a palindrome (69373837396).

The spelling of 15121425245 in words is "fifteen billion, one hundred twenty-one million, four hundred twenty-five thousand, two hundred forty-five".