1252269878 has 16 divisors (see below), whose sum is σ = 2002078944. Its totient is φ = 585398400.

The previous prime is 1252269871. The next prime is 1252269881. The reversal of 1252269878 is 8789622521.

It is a super-2 number, since 2×1252269878² = 3136359694692269768, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252269871) 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, 116825 + ... + 127092.

It is an arithmetic number, because the mean of its divisors is an integer number (125129934).

Almost surely, 2^1252269878 is an apocalyptic number.

1252269878 is a deficient number, since it is larger than the sum of its proper divisors (749809066).

1252269878 is a wasteful number, since it uses less digits than its factorization.

1252269878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244087.

The product of its digits is 967680, while the sum is 50.

The square root of 1252269878 is about 35387.4254220337. The cubic root of 1252269878 is about 1077.8689912537.

The spelling of 1252269878 in words is "one billion, two hundred fifty-two million, two hundred sixty-nine thousand, eight hundred seventy-eight".