1253794245 has 16 divisors (see below), whose sum is σ = 2188441152. Its totient is φ = 607900160.

The previous prime is 1253794229. The next prime is 1253794291. The reversal of 1253794245 is 5424973521.

It is a happy number.

It is not a de Polignac number, because 1253794245 - 2⁴ = 1253794229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1253794197 and 1253794206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3799212 + ... + 3799541.

It is an arithmetic number, because the mean of its divisors is an integer number (136777572).

Almost surely, 2^1253794245 is an apocalyptic number.

1253794245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253794245 is a deficient number, since it is larger than the sum of its proper divisors (934646907).

1253794245 is a wasteful number, since it uses less digits than its factorization.

1253794245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7598772.

The product of its digits is 302400, while the sum is 42.

The square root of 1253794245 is about 35408.9571295174. The cubic root of 1253794245 is about 1078.3061711585.

The spelling of 1253794245 in words is "one billion, two hundred fifty-three million, seven hundred ninety-four thousand, two hundred forty-five".