1252988776485 has 24 divisors (see below), whose sum is σ = 2175861759864. Its totient is φ = 667025435520.

The previous prime is 1252988776483. The next prime is 1252988776489. The reversal of 1252988776485 is 5846778892521.

1252988776485 is a `hidden beast` number, since 1 + 2 + 52 + 98 + 8 + 7 + 7 + 6 + 485 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11854636641 + 1241134139844 = 108879^2 + 1114062^2 .

It is not a de Polignac number, because 1252988776485 - 2¹ = 1252988776483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252988776483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25709662 + ... + 25758351.

It is an arithmetic number, because the mean of its divisors is an integer number (90660906661).

Almost surely, 2^{1252988776485} is an apocalyptic number.

1252988776485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1252988776485 is a deficient number, since it is larger than the sum of its proper divisors (922872983379).

1252988776485 is a wasteful number, since it uses less digits than its factorization.

1252988776485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51468565 (or 51468562 counting only the distinct ones).

The product of its digits is 541900800, while the sum is 72.

The spelling of 1252988776485 in words is "one trillion, two hundred fifty-two billion, nine hundred eighty-eight million, seven hundred seventy-six thousand, four hundred eighty-five".