1225357400 has 24 divisors (see below), whose sum is σ = 2848956420. Its totient is φ = 490142880.

The previous prime is 1225357373. The next prime is 1225357409. The reversal of 1225357400 is 47535221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225357409) 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, 3063194 + ... + 3063593.

Almost surely, 2^1225357400 is an apocalyptic number.

1225357400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225357400 is an abundant number, since it is smaller than the sum of its proper divisors (1623599020).

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

1225357400 is a wasteful number, since it uses less digits than its factorization.

1225357400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6126803 (or 6126794 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 1225357400 is about 35005.1053419355. The cubic root of 1225357400 is about 1070.0915285491.

The spelling of 1225357400 in words is "one billion, two hundred twenty-five million, three hundred fifty-seven thousand, four hundred".