1252137011 has 4 divisors (see below), whose sum is σ = 1278778272. Its totient is φ = 1225495752.

The previous prime is 1252137001. The next prime is 1252137049. The reversal of 1252137011 is 1107312521.

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

It is a cyclic number.

It is not a de Polignac number, because 1252137011 - 2¹⁴ = 1252120627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252137001) 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, 13320560 + ... + 13320653.

It is an arithmetic number, because the mean of its divisors is an integer number (319694568).

Almost surely, 2^1252137011 is an apocalyptic number.

1252137011 is a deficient number, since it is larger than the sum of its proper divisors (26641261).

1252137011 is an equidigital number, since it uses as much as digits as its factorization.

1252137011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26641260.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 1252137011 is about 35385.5480528421. The cubic root of 1252137011 is about 1077.8308689375.

Adding to 1252137011 its reverse (1107312521), we get a palindrome (2359449532).

The spelling of 1252137011 in words is "one billion, two hundred fifty-two million, one hundred thirty-seven thousand, eleven".