1245797125 has 24 divisors (see below), whose sum is σ = 1571908104. Its totient is φ = 985760000.

The previous prime is 1245797107. The next prime is 1245797131. The reversal of 1245797125 is 5217975421.

It can be written as a sum of positive squares in 12 ways, for example, as 27019204 + 1218777921 = 5198^2 + 34911^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1245797125 is a prime.

It is a super-3 number, since 3×1245797125³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1274637 + ... + 1275613.

It is an arithmetic number, because the mean of its divisors is an integer number (65496171).

Almost surely, 2^1245797125 is an apocalyptic number.

It is an amenable number.

1245797125 is a deficient number, since it is larger than the sum of its proper divisors (326110979).

1245797125 is an frugal number, since it uses more digits than its factorization.

1245797125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194 (or 1083 counting only the distinct ones).

The product of its digits is 176400, while the sum is 43.

The square root of 1245797125 is about 35295.8513851132. The cubic root of 1245797125 is about 1076.0086800777.

The spelling of 1245797125 in words is "one billion, two hundred forty-five million, seven hundred ninety-seven thousand, one hundred twenty-five".