1225313690 has 16 divisors (see below), whose sum is σ = 2225801160. Its totient is φ = 485628480.

The previous prime is 1225313689. The next prime is 1225313717. The reversal of 1225313690 is 963135221.

It can be written as a sum of positive squares in 4 ways, for example, as 1217800609 + 7513081 = 34897^2 + 2741^2 .

It is a super-2 number, since 2×1225313690² = 3002787277802832200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560981 + ... + 563160.

Almost surely, 2^1225313690 is an apocalyptic number.

1225313690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225313690 is a deficient number, since it is larger than the sum of its proper divisors (1000487470).

1225313690 is a wasteful number, since it uses less digits than its factorization.

1225313690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124257.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 1225313690 is about 35004.4809988664. The cubic root of 1225313690 is about 1070.0788045724.

The spelling of 1225313690 in words is "one billion, two hundred twenty-five million, three hundred thirteen thousand, six hundred ninety".