1225053400 has 24 divisors (see below), whose sum is σ = 2848249620. Its totient is φ = 490021280.

The previous prime is 1225053377. The next prime is 1225053407. The reversal of 1225053400 is 43505221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225053407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3062434 + ... + 3062833.

Almost surely, 2^1225053400 is an apocalyptic number.

1225053400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225053400 is an abundant number, since it is smaller than the sum of its proper divisors (1623196220).

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

1225053400 is a wasteful number, since it uses less digits than its factorization.

1225053400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6125283 (or 6125274 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1225053400 is about 35000.7628488295. The cubic root of 1225053400 is about 1070.0030279124.

Adding to 1225053400 its reverse (43505221), we get a palindrome (1268558621).

The spelling of 1225053400 in words is "one billion, two hundred twenty-five million, fifty-three thousand, four hundred".