2505401938 has 8 divisors (see below), whose sum is σ = 4047187788. Its totient is φ = 1156339344.

The previous prime is 2505401933. The next prime is 2505401947. The reversal of 2505401938 is 8391045052.

It can be written as a sum of positive squares in 2 ways, for example, as 2478745369 + 26656569 = 49787^2 + 5163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2505401897 and 2505401906.

It is not an unprimeable number, because it can be changed into a prime (2505401933) 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, 48180781 + ... + 48180832.

Almost surely, 2^2505401938 is an apocalyptic number.

2505401938 is a deficient number, since it is larger than the sum of its proper divisors (1541785850).

2505401938 is a wasteful number, since it uses less digits than its factorization.

2505401938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96361628.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 2505401938 is about 50053.9902305501. The cubic root of 2505401938 is about 1358.1856461040.

The spelling of 2505401938 in words is "two billion, five hundred five million, four hundred one thousand, nine hundred thirty-eight".