1253801263 has 8 divisors (see below), whose sum is σ = 1472997456. Its totient is φ = 1052140800.

The previous prime is 1253801261. The next prime is 1253801309. The reversal of 1253801263 is 3621083521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1253801263 - 2¹ = 1253801261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253801261) 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, 4383778 + ... + 4384063.

It is an arithmetic number, because the mean of its divisors is an integer number (184124682).

Almost surely, 2^1253801263 is an apocalyptic number.

1253801263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1253801263 is a deficient number, since it is larger than the sum of its proper divisors (219196193).

1253801263 is a wasteful number, since it uses less digits than its factorization.

1253801263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8767865.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1253801263 is about 35409.0562285978. The cubic root of 1253801263 is about 1078.3081830619.

Adding to 1253801263 its reverse (3621083521), we get a palindrome (4874884784).

The spelling of 1253801263 in words is "one billion, two hundred fifty-three million, eight hundred one thousand, two hundred sixty-three".