1245412125 has 64 divisors (see below), whose sum is σ = 2310497280. Its totient is φ = 661953600.

The previous prime is 1245412117. The next prime is 1245412127. The reversal of 1245412125 is 5212145421.

It is a happy number.

1245412125 is a `hidden beast` number, since 1 + 245 + 412 + 1 + 2 + 5 = 666.

It is not a de Polignac number, because 1245412125 - 2³ = 1245412117 is a prime.

It is a super-2 number, since 2×1245412125² = 3102102722194031250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245412127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1562227 + ... + 1563023.

It is an arithmetic number, because the mean of its divisors is an integer number (36101520).

Almost surely, 2^1245412125 is an apocalyptic number.

1245412125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245412125 is a deficient number, since it is larger than the sum of its proper divisors (1065085155).

1245412125 is an equidigital number, since it uses as much as digits as its factorization.

1245412125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1268 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1245412125 is about 35290.3970649240. The cubic root of 1245412125 is about 1075.8978257458.

Adding to 1245412125 its reverse (5212145421), we get a palindrome (6457557546).

The spelling of 1245412125 in words is "one billion, two hundred forty-five million, four hundred twelve thousand, one hundred twenty-five".