1225385292 has 12 divisors (see below), whose sum is σ = 2859232376. Its totient is φ = 408461760.

The previous prime is 1225385251. The next prime is 1225385299. The reversal of 1225385292 is 2925835221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1225385292² = 3003138227699850528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1225385292.

It is not an unprimeable number, because it can be changed into a prime (1225385299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51057709 + ... + 51057732.

Almost surely, 2^1225385292 is an apocalyptic number.

1225385292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225385292 is an abundant number, since it is smaller than the sum of its proper divisors (1633847084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225385292 is a wasteful number, since it uses less digits than its factorization.

1225385292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102115448 (or 102115446 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 1225385292 is about 35005.5037386980. The cubic root of 1225385292 is about 1070.0996477494.

The spelling of 1225385292 in words is "one billion, two hundred twenty-five million, three hundred eighty-five thousand, two hundred ninety-two".