11257625642 has 4 divisors (see below), whose sum is σ = 16886438466. Its totient is φ = 5628812820.

The previous prime is 11257625593. The next prime is 11257625669. The reversal of 11257625642 is 24652675211.

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., 9473323561 + 1784302081 = 97331^2 + 42241^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11257625642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2814406409 + ... + 2814406412.

Almost surely, 2^11257625642 is an apocalyptic number.

11257625642 is a deficient number, since it is larger than the sum of its proper divisors (5628812824).

11257625642 is an equidigital number, since it uses as much as digits as its factorization.

11257625642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628812823.

The product of its digits is 201600, while the sum is 41.

The spelling of 11257625642 in words is "eleven billion, two hundred fifty-seven million, six hundred twenty-five thousand, six hundred forty-two".