1225717148 has 24 divisors (see below), whose sum is σ = 2160208512. Its totient is φ = 608531184.

The previous prime is 1225717147. The next prime is 1225717177. The reversal of 1225717148 is 8417175221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225717147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345761 + ... + 349287.

It is an arithmetic number, because the mean of its divisors is an integer number (90008688).

Almost surely, 2^1225717148 is an apocalyptic number.

It is an amenable number.

1225717148 is a deficient number, since it is larger than the sum of its proper divisors (934491364).

1225717148 is a wasteful number, since it uses less digits than its factorization.

1225717148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121 (or 4119 counting only the distinct ones).

The product of its digits is 31360, while the sum is 38.

The square root of 1225717148 is about 35010.2434724467. The cubic root of 1225717148 is about 1070.1962396644.

The spelling of 1225717148 in words is "one billion, two hundred twenty-five million, seven hundred seventeen thousand, one hundred forty-eight".