12225752400 has 60 divisors (see below), whose sum is σ = 39163164032. Its totient is φ = 3260200320.

The previous prime is 12225752359. The next prime is 12225752423. The reversal of 12225752400 is 425752221.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×12225752400² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5092864 + ... + 5095263.

Almost surely, 2^12225752400 is an apocalyptic number.

12225752400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12225752400 is an abundant number, since it is smaller than the sum of its proper divisors (26937411632).

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

12225752400 is a wasteful number, since it uses less digits than its factorization.

12225752400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10188148 (or 10188137 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

The spelling of 12225752400 in words is "twelve billion, two hundred twenty-five million, seven hundred fifty-two thousand, four hundred".