1265213470 has 16 divisors (see below), whose sum is σ = 2278650528. Its totient is φ = 505804000.

The previous prime is 1265213449. The next prime is 1265213471. The reversal of 1265213470 is 743125621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265213471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15781 + ... + 52720.

It is an arithmetic number, because the mean of its divisors is an integer number (142415658).

Almost surely, 2^1265213470 is an apocalyptic number.

1265213470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1265213470 is a deficient number, since it is larger than the sum of its proper divisors (1013437058).

1265213470 is a wasteful number, since it uses less digits than its factorization.

1265213470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70355.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1265213470 is about 35569.8393305340. The cubic root of 1265213470 is about 1081.5699247315.

The spelling of 1265213470 in words is "one billion, two hundred sixty-five million, two hundred thirteen thousand, four hundred seventy".