245225140 has 12 divisors (see below), whose sum is σ = 514972836. Its totient is φ = 98090048.

The previous prime is 245225107. The next prime is 245225147. The reversal of 245225140 is 41522542.

It can be written as a sum of positive squares in 2 ways, for example, as 143376676 + 101848464 = 11974^2 + 10092^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245225147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6130609 + ... + 6130648.

It is an arithmetic number, because the mean of its divisors is an integer number (42914403).

Almost surely, 2^245225140 is an apocalyptic number.

245225140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245225140 is an abundant number, since it is smaller than the sum of its proper divisors (269747696).

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

245225140 is a wasteful number, since it uses less digits than its factorization.

245225140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12261266 (or 12261264 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 245225140 is about 15659.6660245358. Note that the first 3 decimals coincide. The cubic root of 245225140 is about 625.9240858312.

Adding to 245225140 its reverse (41522542), we get a palindrome (286747682).

The spelling of 245225140 in words is "two hundred forty-five million, two hundred twenty-five thousand, one hundred forty".