2545861090 has 8 divisors (see below), whose sum is σ = 4582549980. Its totient is φ = 1018344432.

The previous prime is 2545861039. The next prime is 2545861103. The reversal of 2545861090 is 901685452.

It can be written as a sum of positive squares in 2 ways, for example, as 2407963041 + 137898049 = 49071^2 + 11743^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127293045 + ... + 127293064.

Almost surely, 2^2545861090 is an apocalyptic number.

2545861090 is a deficient number, since it is larger than the sum of its proper divisors (2036688890).

2545861090 is a wasteful number, since it uses less digits than its factorization.

2545861090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254586116.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 2545861090 is about 50456.5267334168. The cubic root of 2545861090 is about 1365.4576486536.

The spelling of 2545861090 in words is "two billion, five hundred forty-five million, eight hundred sixty-one thousand, ninety".