12457725 has 48 divisors (see below), whose sum is σ = 23986560. Its totient is φ = 5587200.

The previous prime is 12457721. The next prime is 12457729. The reversal of 12457725 is 52775421.

It is an interprime number because it is at equal distance from previous prime (12457721) and next prime (12457729).

It is not a de Polignac number, because 12457725 - 2² = 12457721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12457721) 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, 31831 + ... + 32219.

It is an arithmetic number, because the mean of its divisors is an integer number (499720).

Almost surely, 2^12457725 is an apocalyptic number.

12457725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12457725 is a deficient number, since it is larger than the sum of its proper divisors (11528835).

12457725 is a wasteful number, since it uses less digits than its factorization.

12457725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 465 counting only the distinct ones).

The product of its digits is 19600, while the sum is 33.

The square root of 12457725 is about 3529.5502546359. The cubic root of 12457725 is about 231.8175152894.

The spelling of 12457725 in words is "twelve million, four hundred fifty-seven thousand, seven hundred twenty-five".