1250012505 has 32 divisors (see below), whose sum is σ = 2288563200. Its totient is φ = 570727872.

The previous prime is 1250012479. The next prime is 1250012513. The reversal of 1250012505 is 5052100521.

It is not a de Polignac number, because 1250012505 - 2⁹ = 1250011993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83266 + ... + 97124.

It is an arithmetic number, because the mean of its divisors is an integer number (71517600).

Almost surely, 2^1250012505 is an apocalyptic number.

1250012505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1250012505 is a deficient number, since it is larger than the sum of its proper divisors (1038550695).

1250012505 is a wasteful number, since it uses less digits than its factorization.

1250012505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14733.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1250012505 is about 35355.5159062911. The cubic root of 1250012505 is about 1077.2209371647.

The spelling of 1250012505 in words is "one billion, two hundred fifty million, twelve thousand, five hundred five".