2500000401 has 4 divisors (see below), whose sum is σ = 3333333872. Its totient is φ = 1666666932.

The previous prime is 2500000397. The next prime is 2500000427. The reversal of 2500000401 is 1040000052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2500000401 - 2² = 2500000397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2500000441) 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, 416666731 + ... + 416666736.

It is an arithmetic number, because the mean of its divisors is an integer number (833333468).

Almost surely, 2^2500000401 is an apocalyptic number.

It is an amenable number.

2500000401 is a deficient number, since it is larger than the sum of its proper divisors (833333471).

2500000401 is an equidigital number, since it uses as much as digits as its factorization.

2500000401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833333470.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 2500000401 is about 50000.0040099998. The cubic root of 2500000401 is about 1357.2088808629.

Adding to 2500000401 its reverse (1040000052), we get a palindrome (3540000453).

The spelling of 2500000401 in words is "two billion, five hundred million, four hundred one", and thus it is an aban number.