2561052402 has 24 divisors (see below), whose sum is σ = 5577121836. Its totient is φ = 849349536.

The previous prime is 2561052401. The next prime is 2561052433. The reversal of 2561052402 is 2042501652.

2561052402 is a `hidden beast` number, since 2 + 5 + 610 + 5 + 2 + 40 + 2 = 666.

2561052402 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 2 ways, for example, as 2153052801 + 407999601 = 46401^2 + 20199^2 .

It is not an unprimeable number, because it can be changed into a prime (2561052401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 357573 + ... + 364664.

Almost surely, 2^2561052402 is an apocalyptic number.

2561052402 is an abundant number, since it is smaller than the sum of its proper divisors (3016069434).

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

2561052402 is a wasteful number, since it uses less digits than its factorization.

2561052402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722442 (or 722439 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2561052402 is about 50606.8414544911. The cubic root of 2561052402 is about 1368.1681881292.

The spelling of 2561052402 in words is "two billion, five hundred sixty-one million, fifty-two thousand, four hundred two".