1265225415 has 16 divisors (see below), whose sum is σ = 2052093408. Its totient is φ = 665542656.

The previous prime is 1265225411. The next prime is 1265225431. The reversal of 1265225415 is 5145225621.

It is not a de Polignac number, because 1265225415 - 2² = 1265225411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265225411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 576634 + ... + 578823.

It is an arithmetic number, because the mean of its divisors is an integer number (128255838).

Almost surely, 2^1265225415 is an apocalyptic number.

1265225415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1265225415 is a deficient number, since it is larger than the sum of its proper divisors (786867993).

1265225415 is a wasteful number, since it uses less digits than its factorization.

1265225415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155538.

The product of its digits is 24000, while the sum is 33.

The square root of 1265225415 is about 35570.0072392458. The cubic root of 1265225415 is about 1081.5733284554.

The spelling of 1265225415 in words is "one billion, two hundred sixty-five million, two hundred twenty-five thousand, four hundred fifteen".