25629480625 has 30 divisors (see below), whose sum is σ = 37255475994. Its totient is φ = 17574480000.

The previous prime is 25629480623. The next prime is 25629480683. The reversal of 25629480625 is 52608492652.

It can be written as a sum of positive squares in 5 ways, for example, as 10340652721 + 15288827904 = 101689^2 + 123648^2 .

It is not a de Polignac number, because 25629480625 - 2¹ = 25629480623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25629480623) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 387816 + ... + 449065.

Almost surely, 2^25629480625 is an apocalyptic number.

25629480625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25629480625 is a deficient number, since it is larger than the sum of its proper divisors (11625995369).

25629480625 is an frugal number, since it uses more digits than its factorization.

25629480625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836915 (or 836893 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 25629480625 in words is "twenty-five billion, six hundred twenty-nine million, four hundred eighty thousand, six hundred twenty-five".