2512501538 has 4 divisors (see below), whose sum is σ = 3768752310. Its totient is φ = 1256250768.

The previous prime is 2512501493. The next prime is 2512501559. The reversal of 2512501538 is 8351052152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1396741129 + 1115760409 = 37373^2 + 33403^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628125383 + ... + 628125386.

Almost surely, 2^2512501538 is an apocalyptic number.

2512501538 is a deficient number, since it is larger than the sum of its proper divisors (1256250772).

2512501538 is a wasteful number, since it uses less digits than its factorization.

2512501538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256250771.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 2512501538 is about 50124.8594810998. The cubic root of 2512501538 is about 1359.4673407853.

The spelling of 2512501538 in words is "two billion, five hundred twelve million, five hundred one thousand, five hundred thirty-eight".