1252086261 has 8 divisors (see below), whose sum is σ = 1767651264. Its totient is φ = 785622720.

The previous prime is 1252086233. The next prime is 1252086317. The reversal of 1252086261 is 1626802521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1252086261 - 2⁵ = 1252086229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252086221) 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, 12275305 + ... + 12275406.

It is an arithmetic number, because the mean of its divisors is an integer number (220956408).

Almost surely, 2^1252086261 is an apocalyptic number.

It is an amenable number.

1252086261 is a deficient number, since it is larger than the sum of its proper divisors (515565003).

1252086261 is a wasteful number, since it uses less digits than its factorization.

1252086261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24550731.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1252086261 is about 35384.8309449120. The cubic root of 1252086261 is about 1077.8163069913.

Adding to 1252086261 its reverse (1626802521), we get a palindrome (2878888782).

The spelling of 1252086261 in words is "one billion, two hundred fifty-two million, eighty-six thousand, two hundred sixty-one".