1405212025 has 24 divisors (see below), whose sum is σ = 2077974144. Its totient is φ = 921676800.

The previous prime is 1405212019. The next prime is 1405212031. The reversal of 1405212025 is 5202125041.

It is an interprime number because it is at equal distance from previous prime (1405212019) and next prime (1405212031).

It is not a de Polignac number, because 1405212025 - 2⁷ = 1405211897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1405211987 and 1405212005.

It is an unprimeable number.

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, 170536 + ... + 178585.

It is an arithmetic number, because the mean of its divisors is an integer number (86582256).

Almost surely, 2^1405212025 is an apocalyptic number.

It is an amenable number.

1405212025 is a deficient number, since it is larger than the sum of its proper divisors (672762119).

1405212025 is a wasteful number, since it uses less digits than its factorization.

1405212025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349161 (or 349156 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1405212025 is about 37486.1577785721. The cubic root of 1405212025 is about 1120.0754692449.

Adding to 1405212025 its reverse (5202125041), we get a palindrome (6607337066).

The spelling of 1405212025 in words is "one billion, four hundred five million, two hundred twelve thousand, twenty-five".