15542313225 has 12 divisors (see below), whose sum is σ = 25696624656. Its totient is φ = 8289233680.

The previous prime is 15542313211. The next prime is 15542313247. The reversal of 15542313225 is 52231324551.

It is not a de Polignac number, because 15542313225 - 2⁸ = 15542312969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103615347 + ... + 103615496.

It is an arithmetic number, because the mean of its divisors is an integer number (2141385388).

Almost surely, 2^15542313225 is an apocalyptic number.

15542313225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15542313225 is a deficient number, since it is larger than the sum of its proper divisors (10154311431).

15542313225 is a wasteful number, since it uses less digits than its factorization.

15542313225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207230856 (or 207230851 counting only the distinct ones).

The product of its digits is 36000, while the sum is 33.

Adding to 15542313225 its reverse (52231324551), we get a palindrome (67773637776).

The spelling of 15542313225 in words is "fifteen billion, five hundred forty-two million, three hundred thirteen thousand, two hundred twenty-five".