351320025 has 24 divisors (see below), whose sum is σ = 663828544. Its totient is φ = 160603200.

The previous prime is 351320003. The next prime is 351320027. The reversal of 351320025 is 520023153.

It is not a de Polignac number, because 351320025 - 2⁶ = 351319961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 351319983 and 351320010.

It is not an unprimeable number, because it can be changed into a prime (351320027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334066 + ... + 335115.

Almost surely, 2^351320025 is an apocalyptic number.

351320025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

351320025 is a deficient number, since it is larger than the sum of its proper divisors (312508519).

351320025 is a wasteful number, since it uses less digits than its factorization.

351320025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669201 (or 669196 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 351320025 is about 18743.5328847045. The cubic root of 351320025 is about 705.6147246369.

Adding to 351320025 its reverse (520023153), we get a palindrome (871343178).

The spelling of 351320025 in words is "three hundred fifty-one million, three hundred twenty thousand, twenty-five".