1247508425 has 6 divisors (see below), whose sum is σ = 1546910478. Its totient is φ = 998006720.

The previous prime is 1247508419. The next prime is 1247508511. The reversal of 1247508425 is 5248057421.

It can be written as a sum of positive squares in 3 ways, for example, as 226833721 + 1020674704 = 15061^2 + 31948^2 .

It is not a de Polignac number, because 1247508425 - 2¹⁴ = 1247492041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24950144 + ... + 24950193.

It is an arithmetic number, because the mean of its divisors is an integer number (257818413).

Almost surely, 2^1247508425 is an apocalyptic number.

It is an amenable number.

1247508425 is a deficient number, since it is larger than the sum of its proper divisors (299402053).

1247508425 is an equidigital number, since it uses as much as digits as its factorization.

1247508425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49900347 (or 49900342 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 38.

The square root of 1247508425 is about 35320.0852915165. The cubic root of 1247508425 is about 1076.5011441984.

The spelling of 1247508425 in words is "one billion, two hundred forty-seven million, five hundred eight thousand, four hundred twenty-five".