1252442522 has 4 divisors (see below), whose sum is σ = 1878663786. Its totient is φ = 626221260.

The previous prime is 1252442509. The next prime is 1252442533. The reversal of 1252442522 is 2252442521.

It is a happy number.

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., 1227030841 + 25411681 = 35029^2 + 5041^2 .

It is a super-2 number, since 2×1252442522² = 3137224541827440968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313110629 + ... + 313110632.

Almost surely, 2^1252442522 is an apocalyptic number.

1252442522 is a deficient number, since it is larger than the sum of its proper divisors (626221264).

1252442522 is an equidigital number, since it uses as much as digits as its factorization.

1252442522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626221263.

The product of its digits is 12800, while the sum is 29.

The square root of 1252442522 is about 35389.8646790292. The cubic root of 1252442522 is about 1077.9185223935.

Subtracting 1252442522 from its reverse (2252442521), we obtain a palindrome (999999999).

The spelling of 1252442522 in words is "one billion, two hundred fifty-two million, four hundred forty-two thousand, five hundred twenty-two".