263625642 has 48 divisors (see below), whose sum is σ = 654680832. Its totient is φ = 75103200.

The previous prime is 263625619. The next prime is 263625653. The reversal of 263625642 is 246526362.

263625642 is a `hidden beast` number, since 2 + 6 + 3 + 6 + 2 + 5 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 263625597 and 263625606.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43392 + ... + 49092.

It is an arithmetic number, because the mean of its divisors is an integer number (13639184).

Almost surely, 2^263625642 is an apocalyptic number.

263625642 is an abundant number, since it is smaller than the sum of its proper divisors (391055190).

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

263625642 is a wasteful number, since it uses less digits than its factorization.

263625642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6083 (or 6080 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 263625642 is about 16236.5526513481. The cubic root of 263625642 is about 641.2034987882.

The spelling of 263625642 in words is "two hundred sixty-three million, six hundred twenty-five thousand, six hundred forty-two".