725229450 has 240 divisors, whose sum is σ = 2238356736. Its totient is φ = 172627200.

The previous prime is 725229437. The next prime is 725229457. The reversal of 725229450 is 54922527.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (725229457) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3252039 + ... + 3252261.

Almost surely, 2^725229450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725229450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1119178368).

725229450 is an abundant number, since it is smaller than the sum of its proper divisors (1513127286).

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

725229450 is a wasteful number, since it uses less digits than its factorization.

725229450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 725229450 is about 26930.0844781445. The cubic root of 725229450 is about 898.4456504314.

The spelling of 725229450 in words is "seven hundred twenty-five million, two hundred twenty-nine thousand, four hundred fifty".