1225437371 has 2 divisors, whose sum is σ = 1225437372. Its totient is φ = 1225437370.

The previous prime is 1225437359. The next prime is 1225437391. The reversal of 1225437371 is 1737345221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1225437371 - 2⁶ = 1225437307 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225437341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612718685 + 612718686.

It is an arithmetic number, because the mean of its divisors is an integer number (612718686).

Almost surely, 2^1225437371 is an apocalyptic number.

1225437371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225437371 is an equidigital number, since it uses as much as digits as its factorization.

1225437371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 35.

The square root of 1225437371 is about 35006.2475995357. The cubic root of 1225437371 is about 1070.1148073160.

The spelling of 1225437371 in words is "one billion, two hundred twenty-five million, four hundred thirty-seven thousand, three hundred seventy-one".