25056135625 has 10 divisors (see below), whose sum is σ = 31310147858. Its totient is φ = 20044908000.

The previous prime is 25056135613. The next prime is 25056135653. The reversal of 25056135625 is 52653165052.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 11597351481 + 13458784144 = 107691^2 + 116012^2 .

It is not a de Polignac number, because 25056135625 - 2¹¹ = 25056133577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20044284 + ... + 20045533.

Almost surely, 2^25056135625 is an apocalyptic number.

25056135625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25056135625 is a deficient number, since it is larger than the sum of its proper divisors (6254012233).

25056135625 is an frugal number, since it uses more digits than its factorization.

25056135625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40089837 (or 40089822 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 25056135625 in words is "twenty-five billion, fifty-six million, one hundred thirty-five thousand, six hundred twenty-five".