1245243025 has 12 divisors (see below), whose sum is σ = 1662878812. Its totient is φ = 919563840.

The previous prime is 1245243007. The next prime is 1245243059. The reversal of 1245243025 is 5203425421.

It can be written as a sum of positive squares in 6 ways, for example, as 97456384 + 1147786641 = 9872^2 + 33879^2 .

It is not a de Polignac number, because 1245243025 - 2⁵ = 1245242993 is a prime.

It is a super-2 number, since 2×1245243025² = 3101260382622301250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1245242984 and 1245243002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1915434 + ... + 1916083.

Almost surely, 2^1245243025 is an apocalyptic number.

It is an amenable number.

1245243025 is a deficient number, since it is larger than the sum of its proper divisors (417635787).

1245243025 is a wasteful number, since it uses less digits than its factorization.

1245243025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3831540 (or 3831535 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1245243025 is about 35288.0011476989. The cubic root of 1245243025 is about 1075.8491289989.

Adding to 1245243025 its reverse (5203425421), we get a palindrome (6448668446).

The spelling of 1245243025 in words is "one billion, two hundred forty-five million, two hundred forty-three thousand, twenty-five".