12505770 has 48 divisors (see below), whose sum is σ = 32696352. Its totient is φ = 3316320.

The previous prime is 12505769. The next prime is 12505783. The reversal of 12505770 is 7750521.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25225 + ... + 25715.

It is an arithmetic number, because the mean of its divisors is an integer number (681174).

Almost surely, 2^12505770 is an apocalyptic number.

12505770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12505770 is an abundant number, since it is smaller than the sum of its proper divisors (20190582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12505770 is a wasteful number, since it uses less digits than its factorization.

12505770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 784 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 12505770 is about 3536.3498130134. The cubic root of 12505770 is about 232.1151454777.

The spelling of 12505770 in words is "twelve million, five hundred five thousand, seven hundred seventy".