1252613522 has 4 divisors (see below), whose sum is σ = 1878920286. Its totient is φ = 626306760.

The previous prime is 1252613519. The next prime is 1252613569. The reversal of 1252613522 is 2253162521.

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

It can be written as a sum of positive squares in only one way, i.e., 1078399921 + 174213601 = 32839^2 + 13199^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313153379 + ... + 313153382.

Almost surely, 2^1252613522 is an apocalyptic number.

1252613522 is a deficient number, since it is larger than the sum of its proper divisors (626306764).

1252613522 is an equidigital number, since it uses as much as digits as its factorization.

1252613522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626306763.

The product of its digits is 7200, while the sum is 29.

The square root of 1252613522 is about 35392.2805425138. The cubic root of 1252613522 is about 1077.9675773869.

The spelling of 1252613522 in words is "one billion, two hundred fifty-two million, six hundred thirteen thousand, five hundred twenty-two".