1252626563 has 4 divisors (see below), whose sum is σ = 1279278240. Its totient is φ = 1225974888.

The previous prime is 1252626559. The next prime is 1252626577. The reversal of 1252626563 is 3656262521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3656262521 = 853 ⋅4286357.

It is a cyclic number.

It is not a de Polignac number, because 1252626563 - 2² = 1252626559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252626523) 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, 13325768 + ... + 13325861.

It is an arithmetic number, because the mean of its divisors is an integer number (319819560).

Almost surely, 2^1252626563 is an apocalyptic number.

1252626563 is a deficient number, since it is larger than the sum of its proper divisors (26651677).

1252626563 is an equidigital number, since it uses as much as digits as its factorization.

1252626563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26651676.

The product of its digits is 129600, while the sum is 38.

The square root of 1252626563 is about 35392.4647771245. The cubic root of 1252626563 is about 1077.9713182924.

The spelling of 1252626563 in words is "one billion, two hundred fifty-two million, six hundred twenty-six thousand, five hundred sixty-three".