1252478894 has 12 divisors (see below), whose sum is σ = 1884396336. Its totient is φ = 624349572.

The previous prime is 1252478891. The next prime is 1252478911. The reversal of 1252478894 is 4988742521.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252478891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1076357 + ... + 1077519.

It is an arithmetic number, because the mean of its divisors is an integer number (157033028).

Almost surely, 2^1252478894 is an apocalyptic number.

1252478894 is a deficient number, since it is larger than the sum of its proper divisors (631917442).

1252478894 is an frugal number, since it uses more digits than its factorization.

1252478894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791 (or 1628 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 50.

The square root of 1252478894 is about 35390.3785512390. The cubic root of 1252478894 is about 1077.9289568505.

The spelling of 1252478894 in words is "one billion, two hundred fifty-two million, four hundred seventy-eight thousand, eight hundred ninety-four".