1253510265 has 64 divisors (see below), whose sum is σ = 2393210880. Its totient is φ = 548190720.

The previous prime is 1253510263. The next prime is 1253510267. The reversal of 1253510265 is 5620153521.

It is a happy number.

1253510265 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1253510263) and next prime (1253510267).

It is not a de Polignac number, because 1253510265 - 2¹ = 1253510263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1253510263) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 287532 + ... + 291858.

It is an arithmetic number, because the mean of its divisors is an integer number (37393920).

Almost surely, 2^1253510265 is an apocalyptic number.

1253510265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253510265 is a deficient number, since it is larger than the sum of its proper divisors (1139700615).

1253510265 is a wasteful number, since it uses less digits than its factorization.

1253510265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4462.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1253510265 is about 35404.9469001155. The cubic root of 1253510265 is about 1078.2247541557.

Adding to 1253510265 its reverse (5620153521), we get a palindrome (6873663786).

The spelling of 1253510265 in words is "one billion, two hundred fifty-three million, five hundred ten thousand, two hundred sixty-five".