1252773737 has 4 divisors (see below), whose sum is σ = 1283329236. Its totient is φ = 1222218240.

The previous prime is 1252773719. The next prime is 1252773749. The reversal of 1252773737 is 7373772521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 238733401 + 1014040336 = 15451^2 + 31844^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252773737 - 2¹⁶ = 1252708201 is a prime.

It is a super-2 number, since 2×1252773737² = 3138884072233890338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252773757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15277688 + ... + 15277769.

It is an arithmetic number, because the mean of its divisors is an integer number (320832309).

Almost surely, 2^1252773737 is an apocalyptic number.

It is an amenable number.

1252773737 is a deficient number, since it is larger than the sum of its proper divisors (30555499).

1252773737 is an equidigital number, since it uses as much as digits as its factorization.

1252773737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30555498.

The product of its digits is 432180, while the sum is 44.

The square root of 1252773737 is about 35394.5438874412. The cubic root of 1252773737 is about 1078.0135344225.

The spelling of 1252773737 in words is "one billion, two hundred fifty-two million, seven hundred seventy-three thousand, seven hundred thirty-seven".