340345425 has 72 divisors (see below), whose sum is σ = 672534336. Its totient is φ = 151320960.

The previous prime is 340345417. The next prime is 340345429. The reversal of 340345425 is 524543043.

It is not a de Polignac number, because 340345425 - 2³ = 340345417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 340345392 and 340345401.

It is not an unprimeable number, because it can be changed into a prime (340345429) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 134724 + ... + 137226.

Almost surely, 2^340345425 is an apocalyptic number.

340345425 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

340345425 is a deficient number, since it is larger than the sum of its proper divisors (332188911).

340345425 is a wasteful number, since it uses less digits than its factorization.

340345425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567 (or 2555 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 340345425 is about 18448.4531871916. The cubic root of 340345425 is about 698.1894879125.

Adding to 340345425 its reverse (524543043), we get a palindrome (864888468).

It can be divided in two parts, 3403 and 45425, that added together give a triangular number (48828 = T₃₁₂).

The spelling of 340345425 in words is "three hundred forty million, three hundred forty-five thousand, four hundred twenty-five".