1396220825 has 12 divisors (see below), whose sum is σ = 1731795408. Its totient is φ = 1116666000.

The previous prime is 1396220807. The next prime is 1396220827. The reversal of 1396220825 is 5280226931.

It is not a de Polignac number, because 1396220825 - 2⁸ = 1396220569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1396220827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136334 + ... + 146216.

It is an arithmetic number, because the mean of its divisors is an integer number (144316284).

Almost surely, 2^1396220825 is an apocalyptic number.

It is an amenable number.

1396220825 is a deficient number, since it is larger than the sum of its proper divisors (335574583).

1396220825 is an equidigital number, since it uses as much as digits as its factorization.

1396220825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15544 (or 15539 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1396220825 is about 37366.0383904957. The cubic root of 1396220825 is about 1117.6814346727.

The spelling of 1396220825 in words is "one billion, three hundred ninety-six million, two hundred twenty thousand, eight hundred twenty-five".