345400025 has 12 divisors (see below), whose sum is σ = 432714492. Its totient is φ = 273469440.

The previous prime is 345400001. The next prime is 345400051. The reversal of 345400025 is 520004543.

It can be written as a sum of positive squares in 6 ways, for example, as 34969 + 345365056 = 187^2 + 18584^2 .

It is not a de Polignac number, because 345400025 - 2¹² = 345395929 is a prime.

It is a Duffinian number.

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, 68792 + ... + 73641.

It is an arithmetic number, because the mean of its divisors is an integer number (36059541).

Almost surely, 2^345400025 is an apocalyptic number.

It is an amenable number.

345400025 is a deficient number, since it is larger than the sum of its proper divisors (87314467).

345400025 is a wasteful number, since it uses less digits than its factorization.

345400025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142540 (or 142535 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 345400025 is about 18584.9408123889. The cubic root of 345400025 is about 701.6288767858.

Adding to 345400025 its reverse (520004543), we get a palindrome (865404568).

The spelling of 345400025 in words is "three hundred forty-five million, four hundred thousand, twenty-five".