2545420730 has 16 divisors (see below), whose sum is σ = 4592647944. Its totient is φ = 1015748160.

The previous prime is 2545420723. The next prime is 2545420739. The reversal of 2545420730 is 370245452.

2545420730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 477990769 + 2067429961 = 21863^2 + 45469^2 .

It is not an unprimeable number, because it can be changed into a prime (2545420739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298097 + ... + 306516.

Almost surely, 2^2545420730 is an apocalyptic number.

2545420730 is a deficient number, since it is larger than the sum of its proper divisors (2047227214).

2545420730 is a wasteful number, since it uses less digits than its factorization.

2545420730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605041.

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 2545420730 is about 50452.1627881303. The cubic root of 2545420730 is about 1365.3789159471.

The spelling of 2545420730 in words is "two billion, five hundred forty-five million, four hundred twenty thousand, seven hundred thirty".