2545204641 has 32 divisors (see below), whose sum is σ = 4138506240. Its totient is φ = 1358964864.

The previous prime is 2545204621. The next prime is 2545204661. The reversal of 2545204641 is 1464025452.

It is an interprime number because it is at equal distance from previous prime (2545204621) and next prime (2545204661).

It is not a de Polignac number, because 2545204641 - 2⁷ = 2545204513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2545204621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14565 + ... + 72818.

It is an arithmetic number, because the mean of its divisors is an integer number (129328320).

Almost surely, 2^2545204641 is an apocalyptic number.

2545204641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2545204641 is a deficient number, since it is larger than the sum of its proper divisors (1593301599).

2545204641 is a wasteful number, since it uses less digits than its factorization.

2545204641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87485.

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 2545204641 is about 50450.0212190243. The cubic root of 2545204641 is about 1365.3402777093.

The spelling of 2545204641 in words is "two billion, five hundred forty-five million, two hundred four thousand, six hundred forty-one".