1248217725 has 24 divisors (see below), whose sum is σ = 2071599552. Its totient is φ = 663174400.

The previous prime is 1248217723. The next prime is 1248217727. The reversal of 1248217725 is 5277128421.

It is an interprime number because it is at equal distance from previous prime (1248217723) and next prime (1248217727).

It is not a de Polignac number, because 1248217725 - 2¹ = 1248217723 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248217721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11916 + ... + 51365.

It is an arithmetic number, because the mean of its divisors is an integer number (86316648).

Almost surely, 2^1248217725 is an apocalyptic number.

1248217725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1248217725 is a deficient number, since it is larger than the sum of its proper divisors (823381827).

1248217725 is a wasteful number, since it uses less digits than its factorization.

1248217725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63557 (or 63552 counting only the distinct ones).

The product of its digits is 62720, while the sum is 39.

The square root of 1248217725 is about 35330.1248936372. The cubic root of 1248217725 is about 1076.7051288178.

The spelling of 1248217725 in words is "one billion, two hundred forty-eight million, two hundred seventeen thousand, seven hundred twenty-five".