2573253640 has 16 divisors (see below), whose sum is σ = 5789820780. Its totient is φ = 1029301440.

The previous prime is 2573253587. The next prime is 2573253643. The reversal of 2573253640 is 463523752.

It can be written as a sum of positive squares in 2 ways, for example, as 2562586884 + 10666756 = 50622^2 + 3266^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2573253640.

It is not an unprimeable number, because it can be changed into a prime (2573253643) 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, 32165631 + ... + 32165710.

Almost surely, 2^2573253640 is an apocalyptic number.

2573253640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2573253640 is an abundant number, since it is smaller than the sum of its proper divisors (3216567140).

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

2573253640 is a wasteful number, since it uses less digits than its factorization.

2573253640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64331352 (or 64331348 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 37.

The square root of 2573253640 is about 50727.2475105835. The cubic root of 2573253640 is about 1370.3374663719.

The spelling of 2573253640 in words is "two billion, five hundred seventy-three million, two hundred fifty-three thousand, six hundred forty".