1245544125 has 128 divisors (see below), whose sum is σ = 2475712512. Its totient is φ = 544320000.

The previous prime is 1245544109. The next prime is 1245544163. The reversal of 1245544125 is 5214455421.

It is a happy number.

It is not a de Polignac number, because 1245544125 - 2⁴ = 1245544109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7641294 + ... + 7641456.

It is an arithmetic number, because the mean of its divisors is an integer number (19341504).

Almost surely, 2^1245544125 is an apocalyptic number.

1245544125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245544125 is a deficient number, since it is larger than the sum of its proper divisors (1230168387).

1245544125 is a wasteful number, since it uses less digits than its factorization.

1245544125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 290 counting only the distinct ones).

The product of its digits is 32000, while the sum is 33.

The square root of 1245544125 is about 35292.2672125212. The cubic root of 1245544125 is about 1075.9358355187.

Adding to 1245544125 its reverse (5214455421), we get a palindrome (6459999546).

The spelling of 1245544125 in words is "one billion, two hundred forty-five million, five hundred forty-four thousand, one hundred twenty-five".