1336999225 has 27 divisors (see below), whose sum is σ = 1698042639. Its totient is φ = 1044296400.

The previous prime is 1336999121. The next prime is 1336999243. The reversal of 1336999225 is 5229996331.

It is a happy number.

The square root of 1336999225 is 36565.

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., 481319721 + 855679504 = 21939^2 + 29252^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1336999225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12980524 + ... + 12980626.

Almost surely, 2^1336999225 is an apocalyptic number.

1336999225 is the 36565-th square number.

1336999225 is the 18283-rd centered octagonal number.

It is an amenable number.

1336999225 is a deficient number, since it is larger than the sum of its proper divisors (361043414).

1336999225 is an frugal number, since it uses more digits than its factorization.

1336999225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 179 counting only the distinct ones).

The product of its digits is 787320, while the sum is 49.

The cubic root of 1336999225 is about 1101.6502022187.

Multiplying 1336999225 by its sum of digits (49), we get a square (65512962025 = 255955²).

The spelling of 1336999225 in words is "one billion, three hundred thirty-six million, nine hundred ninety-nine thousand, two hundred twenty-five".