1225197 has 6 divisors (see below), whose sum is σ = 1769742. Its totient is φ = 816792.

The previous prime is 1225183. The next prime is 1225219. The reversal of 1225197 is 7915221.

It can be written as a sum of positive squares in only one way, i.e., 1212201 + 12996 = 1101^2 + 114^2 .

It is not a de Polignac number, because 1225197 - 2¹¹ = 1223149 is a prime.

It is a super-2 number, since 2×1225197² = 3002215377618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1225197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68058 + ... + 68075.

It is an arithmetic number, because the mean of its divisors is an integer number (294957).

2^1225197 is an apocalyptic number.

It is an amenable number.

1225197 is a deficient number, since it is larger than the sum of its proper divisors (544545).

1225197 is a wasteful number, since it uses less digits than its factorization.

1225197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136139 (or 136136 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 1225197 is about 1106.8861730097. The cubic root of 1225197 is about 107.0044834643.

The spelling of 1225197 in words is "one million, two hundred twenty-five thousand, one hundred ninety-seven".