3405261262225 has 9 divisors (see below), whose sum is σ = 4222535406267. Its totient is φ = 2724201628440.

The previous prime is 3405261262177. The next prime is 3405261262231. The reversal of 3405261262225 is 5222621625043.

The square root of 3405261262225 is 1845335.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1225894054401 + 2179367207824 = 1107201^2 + 1476268^2 .

It is not a de Polignac number, because 3405261262225 - 2⁹ = 3405261261713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9042142 + ... + 9411208.

Almost surely, 2^{3405261262225} is an apocalyptic number.

3405261262225 is the 1845335-th square number.

3405261262225 is the 922668-th centered octagonal number.

It is an amenable number.

3405261262225 is a deficient number, since it is larger than the sum of its proper divisors (817274144042).

3405261262225 is an frugal number, since it uses more digits than its factorization.

3405261262225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738144 (or 369072 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 3405261262225 its reverse (5222621625043), we get a palindrome (8627882887268).

The spelling of 3405261262225 in words is "three trillion, four hundred five billion, two hundred sixty-one million, two hundred sixty-two thousand, two hundred twenty-five".