2506623626 has 16 divisors (see below), whose sum is σ = 4051870368. Its totient is φ = 1156129200.

The previous prime is 2506623619. The next prime is 2506623649. The reversal of 2506623626 is 6263266052.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2506623626.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8321 + ... + 71291.

It is an arithmetic number, because the mean of its divisors is an integer number (253241898).

Almost surely, 2^2506623626 is an apocalyptic number.

2506623626 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2506623626 is a deficient number, since it is larger than the sum of its proper divisors (1545246742).

2506623626 is a wasteful number, since it uses less digits than its factorization.

2506623626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64517.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 2506623626 is about 50066.1924456015. The cubic root of 2506623626 is about 1358.4063704322.

Adding to 2506623626 its reverse (6263266052), we get a palindrome (8769889678).

The spelling of 2506623626 in words is "two billion, five hundred six million, six hundred twenty-three thousand, six hundred twenty-six".