1252297465 has 4 divisors (see below), whose sum is σ = 1502756964. Its totient is φ = 1001837968.

The previous prime is 1252297463. The next prime is 1252297477. The reversal of 1252297465 is 5647922521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5647922521 = 29 ⋅194755949.

It can be written as a sum of positive squares in 2 ways, for example, as 338081769 + 914215696 = 18387^2 + 30236^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252297465 - 2¹ = 1252297463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252297463) 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, 125229742 + ... + 125229751.

It is an arithmetic number, because the mean of its divisors is an integer number (375689241).

Almost surely, 2^1252297465 is an apocalyptic number.

It is an amenable number.

1252297465 is a deficient number, since it is larger than the sum of its proper divisors (250459499).

1252297465 is an equidigital number, since it uses as much as digits as its factorization.

1252297465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250459498.

The product of its digits is 302400, while the sum is 43.

The square root of 1252297465 is about 35387.8152052370. The cubic root of 1252297465 is about 1077.8769062019.

The spelling of 1252297465 in words is "one billion, two hundred fifty-two million, two hundred ninety-seven thousand, four hundred sixty-five".