2575645898 has 24 divisors (see below), whose sum is σ = 4513904100. Its totient is φ = 1099018368.

The previous prime is 2575645873. The next prime is 2575645931. The reversal of 2575645898 is 8985465752.

It can be written as a sum of positive squares in 2 ways, for example, as 2553584089 + 22061809 = 50533^2 + 4697^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34943 + ... + 79826.

Almost surely, 2^2575645898 is an apocalyptic number.

2575645898 is a deficient number, since it is larger than the sum of its proper divisors (1938258202).

2575645898 is a wasteful number, since it uses less digits than its factorization.

2575645898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115014 (or 115007 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 59.

The square root of 2575645898 is about 50750.8216485211. The cubic root of 2575645898 is about 1370.7619854018.

The spelling of 2575645898 in words is "two billion, five hundred seventy-five million, six hundred forty-five thousand, eight hundred ninety-eight".