25226562464 has 12 divisors (see below), whose sum is σ = 49664794914. Its totient is φ = 12613281216.

The previous prime is 25226562461. The next prime is 25226562469. The reversal of 25226562464 is 46426562252.

It can be written as a sum of positive squares in only one way, i.e., 25198387600 + 28174864 = 158740^2 + 5308^2 .

It is not an unprimeable number, because it can be changed into a prime (25226562461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394165007 + ... + 394165070.

Almost surely, 2^25226562464 is an apocalyptic number.

It is an amenable number.

25226562464 is a deficient number, since it is larger than the sum of its proper divisors (24438232450).

25226562464 is an equidigital number, since it uses as much as digits as its factorization.

25226562464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788330087 (or 788330079 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 44.

The spelling of 25226562464 in words is "twenty-five billion, two hundred twenty-six million, five hundred sixty-two thousand, four hundred sixty-four".