245225305040 has 20 divisors (see below), whose sum is σ = 570148834404. Its totient is φ = 98090121984.

The previous prime is 245225305037. The next prime is 245225305049. The reversal of 245225305040 is 40503522542.

It can be written as a sum of positive squares in 2 ways, for example, as 145942336576 + 99282968464 = 382024^2 + 315092^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×245225305040² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245225304988 and 245225305006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245225305049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1532658077 + ... + 1532658236.

Almost surely, 2^245225305040 is an apocalyptic number.

245225305040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245225305040 is an abundant number, since it is smaller than the sum of its proper divisors (324923529364).

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

245225305040 is a wasteful number, since it uses less digits than its factorization.

245225305040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065316326 (or 3065316320 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 32.

Adding to 245225305040 its reverse (40503522542), we get a palindrome (285728827582).

The spelling of 245225305040 in words is "two hundred forty-five billion, two hundred twenty-five million, three hundred five thousand, forty".