245225400 has 288 divisors, whose sum is σ = 932976000. Its totient is φ = 52980480.

The previous prime is 245225389. The next prime is 245225413. The reversal of 245225400 is 4522542.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 558381 + ... + 558819.

It is an arithmetic number, because the mean of its divisors is an integer number (3239500).

Almost surely, 2^245225400 is an apocalyptic number.

245225400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245225400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466488000).

245225400 is an abundant number, since it is smaller than the sum of its proper divisors (687750600).

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

245225400 is a wasteful number, since it uses less digits than its factorization.

245225400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 245225400 is about 15659.6743261155. The cubic root of 245225400 is about 625.9243070432.

Adding to 245225400 its reverse (4522542), we get a palindrome (249747942).

The spelling of 245225400 in words is "two hundred forty-five million, two hundred twenty-five thousand, four hundred".