351178016225 has 24 divisors (see below), whose sum is σ = 437726860920. Its totient is φ = 279483269120.

The previous prime is 351178016221. The next prime is 351178016227. The reversal of 351178016225 is 522610871153.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 8873451601 + 342304564624 = 94199^2 + 585068^2 .

It is not a de Polignac number, because 351178016225 - 2² = 351178016221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (351178016221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4931171 + ... + 5001879.

It is an arithmetic number, because the mean of its divisors is an integer number (18238619205).

Almost surely, 2^351178016225 is an apocalyptic number.

It is an amenable number.

351178016225 is a deficient number, since it is larger than the sum of its proper divisors (86548844695).

351178016225 is a wasteful number, since it uses less digits than its factorization.

351178016225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71749 (or 71744 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

Adding to 351178016225 its reverse (522610871153), we get a palindrome (873788887378).

The spelling of 351178016225 in words is "three hundred fifty-one billion, one hundred seventy-eight million, sixteen thousand, two hundred twenty-five".