1222699525 has 12 divisors (see below), whose sum is σ = 1516724352. Its totient is φ = 977787440.

The previous prime is 1222699487. The next prime is 1222699529. The reversal of 1222699525 is 5259962221.

It is not a de Polignac number, because 1222699525 - 2¹⁷ = 1222568453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222699529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71454 + ... + 86896.

It is an arithmetic number, because the mean of its divisors is an integer number (126393696).

Almost surely, 2^1222699525 is an apocalyptic number.

It is an amenable number.

1222699525 is a deficient number, since it is larger than the sum of its proper divisors (294024827).

1222699525 is a wasteful number, since it uses less digits than its factorization.

1222699525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18620 (or 18615 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The square root of 1222699525 is about 34967.1206278126. The cubic root of 1222699525 is about 1069.3172705257.

The spelling of 1222699525 in words is "one billion, two hundred twenty-two million, six hundred ninety-nine thousand, five hundred twenty-five".