1265225297 has 4 divisors (see below), whose sum is σ = 1445971776. Its totient is φ = 1084478820.

The previous prime is 1265225287. The next prime is 1265225321. The reversal of 1265225297 is 7925225621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1265225297 - 2⁴ = 1265225281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1265225237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90373229 + ... + 90373242.

It is an arithmetic number, because the mean of its divisors is an integer number (361492944).

Almost surely, 2^1265225297 is an apocalyptic number.

It is an amenable number.

1265225297 is a deficient number, since it is larger than the sum of its proper divisors (180746479).

1265225297 is an equidigital number, since it uses as much as digits as its factorization.

1265225297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180746478.

The product of its digits is 151200, while the sum is 41.

The square root of 1265225297 is about 35570.0055805450. The cubic root of 1265225297 is about 1081.5732948315.

The spelling of 1265225297 in words is "one billion, two hundred sixty-five million, two hundred twenty-five thousand, two hundred ninety-seven".