1225388952 has 32 divisors (see below), whose sum is σ = 3403858800. Its totient is φ = 408462912.

The previous prime is 1225388947. The next prime is 1225388981. The reversal of 1225388952 is 2598835221.

1225388952 is a `hidden beast` number, since 1 + 22 + 538 + 8 + 95 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1225388898 and 1225388907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2836333 + ... + 2836764.

Almost surely, 2^1225388952 is an apocalyptic number.

1225388952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225388952 is an abundant number, since it is smaller than the sum of its proper divisors (2178469848).

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

1225388952 is a wasteful number, since it uses less digits than its factorization.

1225388952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5673112 (or 5673102 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 1225388952 is about 35005.5560161526. The cubic root of 1225388952 is about 1070.1007131451.

The spelling of 1225388952 in words is "one billion, two hundred twenty-five million, three hundred eighty-eight thousand, nine hundred fifty-two".