25725723125 has 20 divisors (see below), whose sum is σ = 32166887676. Its totient is φ = 20567760000.

The previous prime is 25725723109. The next prime is 25725723131. The reversal of 25725723125 is 52132752752.

It can be written as a sum of positive squares in 10 ways, for example, as 15489544849 + 10236178276 = 124457^2 + 101174^2 .

It is not a de Polignac number, because 25725723125 - 2⁴ = 25725723109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1063667 + ... + 1087583.

Almost surely, 2^25725723125 is an apocalyptic number.

25725723125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25725723125 is a deficient number, since it is larger than the sum of its proper divisors (6441164551).

25725723125 is an equidigital number, since it uses as much as digits as its factorization.

25725723125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25658 (or 25643 counting only the distinct ones).

The product of its digits is 294000, while the sum is 41.

The spelling of 25725723125 in words is "twenty-five billion, seven hundred twenty-five million, seven hundred twenty-three thousand, one hundred twenty-five".