1225687995 has 48 divisors (see below), whose sum is σ = 2440731072. Its totient is φ = 557383680.

The previous prime is 1225687993. The next prime is 1225688027. The reversal of 1225687995 is 5997865221.

1225687995 is a `hidden beast` number, since 1 + 2 + 2 + 568 + 79 + 9 + 5 = 666.

It is not a de Polignac number, because 1225687995 - 2¹ = 1225687993 is a prime.

It is a super-2 number, since 2×1225687995² = 3004622122174240050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225687993) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50715 + ... + 70875.

It is an arithmetic number, because the mean of its divisors is an integer number (50848564).

Almost surely, 2^1225687995 is an apocalyptic number.

1225687995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1225687995 is a deficient number, since it is larger than the sum of its proper divisors (1215043077).

1225687995 is a wasteful number, since it uses less digits than its factorization.

1225687995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20372 (or 20369 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The square root of 1225687995 is about 35009.8271203958. The cubic root of 1225687995 is about 1070.1877549232.

The spelling of 1225687995 in words is "one billion, two hundred twenty-five million, six hundred eighty-seven thousand, nine hundred ninety-five".