1225196290 has 16 divisors (see below), whose sum is σ = 2335080312. Its totient is φ = 461250304.

The previous prime is 1225196279. The next prime is 1225196299. The reversal of 1225196290 is 926915221.

It can be written as a sum of positive squares in 4 ways, for example, as 758506681 + 466689609 = 27541^2 + 21603^2 .

It is a super-2 number, since 2×1225196290² = 3002211898059528200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225196299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3603349 + ... + 3603688.

Almost surely, 2^1225196290 is an apocalyptic number.

1225196290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225196290 is a deficient number, since it is larger than the sum of its proper divisors (1109884022).

1225196290 is a wasteful number, since it uses less digits than its factorization.

1225196290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7207061.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 1225196290 is about 35002.8040305345. The cubic root of 1225196290 is about 1070.0446279462.

The spelling of 1225196290 in words is "one billion, two hundred twenty-five million, one hundred ninety-six thousand, two hundred ninety".