1253878355 has 4 divisors (see below), whose sum is σ = 1504654032. Its totient is φ = 1003102680.

The previous prime is 1253878349. The next prime is 1253878387. The reversal of 1253878355 is 5538783521.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1253878355 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125387831 + ... + 125387840.

It is an arithmetic number, because the mean of its divisors is an integer number (376163508).

Almost surely, 2^1253878355 is an apocalyptic number.

1253878355 is a deficient number, since it is larger than the sum of its proper divisors (250775677).

1253878355 is an equidigital number, since it uses as much as digits as its factorization.

1253878355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250775676.

The product of its digits is 1008000, while the sum is 47.

The square root of 1253878355 is about 35410.1448034317. The cubic root of 1253878355 is about 1078.3302831169.

The spelling of 1253878355 in words is "one billion, two hundred fifty-three million, eight hundred seventy-eight thousand, three hundred fifty-five".