1356622425 has 30 divisors (see below), whose sum is σ = 2512937438. Its totient is φ = 723530880.

The previous prime is 1356622381. The next prime is 1356622433. The reversal of 1356622425 is 5242266531.

1356622425 is a `hidden beast` number, since 1 + 3 + 5 + 6 + 622 + 4 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 16842816 + 1339779609 = 4104^2 + 36603^2 .

It is not a de Polignac number, because 1356622425 - 2⁷ = 1356622297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1356622425.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 332944 + ... + 336993.

Almost surely, 2^1356622425 is an apocalyptic number.

1356622425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1356622425 is a deficient number, since it is larger than the sum of its proper divisors (1156315013).

1356622425 is an equidigital number, since it uses as much as digits as its factorization.

1356622425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669959 (or 669945 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1356622425 is about 36832.3556808413. The cubic root of 1356622425 is about 1107.0137041950.

Adding to 1356622425 its reverse (5242266531), we get a palindrome (6598888956).

The spelling of 1356622425 in words is "one billion, three hundred fifty-six million, six hundred twenty-two thousand, four hundred twenty-five".