1248258015 has 12 divisors (see below), whose sum is σ = 2163647304. Its totient is φ = 665737584.

The previous prime is 1248258013. The next prime is 1248258061. The reversal of 1248258015 is 5108528421.

It is not a de Polignac number, because 1248258015 - 2¹ = 1248258013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248258013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13869489 + ... + 13869578.

It is an arithmetic number, because the mean of its divisors is an integer number (180303942).

Almost surely, 2^1248258015 is an apocalyptic number.

1248258015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1248258015 is a deficient number, since it is larger than the sum of its proper divisors (915389289).

1248258015 is a wasteful number, since it uses less digits than its factorization.

1248258015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27739078 (or 27739075 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 1248258015 is about 35330.6950823218. The cubic root of 1248258015 is about 1076.7167133306.

The spelling of 1248258015 in words is "one billion, two hundred forty-eight million, two hundred fifty-eight thousand, fifteen".