2500351642 has 4 divisors (see below), whose sum is σ = 3750527466. Its totient is φ = 1250175820.

The previous prime is 2500351589. The next prime is 2500351649. The reversal of 2500351642 is 2461530052.

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., 1404675441 + 1095676201 = 37479^2 + 33101^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2500351642.

It is not an unprimeable number, because it can be changed into a prime (2500351649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625087909 + ... + 625087912.

Almost surely, 2^2500351642 is an apocalyptic number.

2500351642 is a deficient number, since it is larger than the sum of its proper divisors (1250175824).

2500351642 is a wasteful number, since it uses less digits than its factorization.

2500351642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250175823.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2500351642 is about 50003.5162963566. The cubic root of 2500351642 is about 1357.2724388635.

Adding to 2500351642 its reverse (2461530052), we get a palindrome (4961881694).

The spelling of 2500351642 in words is "two billion, five hundred million, three hundred fifty-one thousand, six hundred forty-two".