2500400501 has 4 divisors (see below), whose sum is σ = 2506175532. Its totient is φ = 2494625472.

The previous prime is 2500400491. The next prime is 2500400533. The reversal of 2500400501 is 1050040052.

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

It can be written as a sum of positive squares in 2 ways, for example, as 686492401 + 1813908100 = 26201^2 + 42590^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500400501 - 2²² = 2496206197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2500400501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500402501) 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, 2886866 + ... + 2887731.

It is an arithmetic number, because the mean of its divisors is an integer number (626543883).

Almost surely, 2^2500400501 is an apocalyptic number.

It is an amenable number.

2500400501 is a deficient number, since it is larger than the sum of its proper divisors (5775031).

2500400501 is an equidigital number, since it uses as much as digits as its factorization.

2500400501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5775030.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2500400501 is about 50004.0048496118. The cubic root of 2500400501 is about 1357.2812795589.

Adding to 2500400501 its reverse (1050040052), we get a palindrome (3550440553).

The spelling of 2500400501 in words is "two billion, five hundred million, four hundred thousand, five hundred one".