72250450 has 24 divisors (see below), whose sum is σ = 135780372. Its totient is φ = 28600320.

The previous prime is 72250447. The next prime is 72250457. The reversal of 72250450 is 5405227.

It can be written as a sum of positive squares in 6 ways, for example, as 42863209 + 29387241 = 6547^2 + 5421^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72250457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2599 + ... + 12298.

Almost surely, 2^72250450 is an apocalyptic number.

72250450 is a deficient number, since it is larger than the sum of its proper divisors (63529922).

72250450 is a wasteful number, since it uses less digits than its factorization.

72250450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15006 (or 15001 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 72250450 is about 8500.0264705470. The cubic root of 72250450 is about 416.4985739745.

Adding to 72250450 its reverse (5405227), we get a palindrome (77655677).

The spelling of 72250450 in words is "seventy-two million, two hundred fifty thousand, four hundred fifty".