1245724025 has 48 divisors (see below), whose sum is σ = 1906627968. Its totient is φ = 786240000.

The previous prime is 1245724021. The next prime is 1245724027. The reversal of 1245724025 is 5204275421.

It is not a de Polignac number, because 1245724025 - 2² = 1245724021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1245723982 and 1245724000.

It is not an unprimeable number, because it can be changed into a prime (1245724021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1184750 + ... + 1185800.

It is an arithmetic number, because the mean of its divisors is an integer number (39721416).

Almost surely, 2^1245724025 is an apocalyptic number.

It is an amenable number.

1245724025 is a deficient number, since it is larger than the sum of its proper divisors (660903943).

1245724025 is a wasteful number, since it uses less digits than its factorization.

1245724025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602 (or 1597 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 1245724025 is about 35294.8158374569. The cubic root of 1245724025 is about 1075.9876339080.

Adding to 1245724025 its reverse (5204275421), we get a palindrome (6449999446).

The spelling of 1245724025 in words is "one billion, two hundred forty-five million, seven hundred twenty-four thousand, twenty-five".