2501136641 has 2 divisors, whose sum is σ = 2501136642. Its totient is φ = 2501136640.

The previous prime is 2501136607. The next prime is 2501136683. The reversal of 2501136641 is 1466311052.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2236911616 + 264225025 = 47296^2 + 16255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2501136641 is a prime.

It is not a weakly prime, because it can be changed into another prime (2501138641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250568320 + 1250568321.

It is an arithmetic number, because the mean of its divisors is an integer number (1250568321).

Almost surely, 2^2501136641 is an apocalyptic number.

It is an amenable number.

2501136641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2501136641 is an equidigital number, since it uses as much as digits as its factorization.

2501136641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2501136641 is about 50011.3651183409. The cubic root of 2501136641 is about 1357.4144650232.

Adding to 2501136641 its reverse (1466311052), we get a palindrome (3967447693).

The spelling of 2501136641 in words is "two billion, five hundred one million, one hundred thirty-six thousand, six hundred forty-one".