1225414391 has 2 divisors, whose sum is σ = 1225414392. Its totient is φ = 1225414390.

The previous prime is 1225414373. The next prime is 1225414439. The reversal of 1225414391 is 1934145221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1225414391 - 2²² = 1221220087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225414331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612707195 + 612707196.

It is an arithmetic number, because the mean of its divisors is an integer number (612707196).

Almost surely, 2^1225414391 is an apocalyptic number.

1225414391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225414391 is an equidigital number, since it uses as much as digits as its factorization.

1225414391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 1225414391 is about 35005.9193708721. The cubic root of 1225414391 is about 1070.1081181691.

The spelling of 1225414391 in words is "one billion, two hundred twenty-five million, four hundred fourteen thousand, three hundred ninety-one".